Index

This page lists all MDN JavaScript pages along with their summary and tags.

Found 671 pages:

#	Page	Tags and summary
1	JavaScript	JavaScript, Landing
		JavaScript® (often shortened to JS) is a lightweight, interpreted, object-oriented language with first-class functions, most known as the scripting language for Web pages, but used in many non-browser environments as well such as node.js or Apache CouchDB. It is a prototype-based, multi-paradigm scripting language that is dynamic, and supports object-oriented, imperative, and functional programming styles. Read more about JavaScript.
2	A re-introduction to JavaScript (JS tutorial)	Intermediate, JavaScript, Tutorial
		Why a re-introduction? Because JavaScript is notorious for being the world's most misunderstood programming language. While often derided as a toy, beneath its deceptive simplicity lie some powerful language features, one that is now used by an incredible number of high-profile applications, showing that deeper knowledge of this technology is an important skill for any web or mobile developer.
3	About JavaScript	JavaScript
		JavaScript® (often shortened to JS) is a lightweight, interpreted, object-oriented language with first-class functions, most known as the scripting language for Web pages, but used in many non-browser environments as well. It is a prototype-based, multi-paradigm scripting language that is dynamic, and supports object-oriented, imperative, and functional programming styles.
4	Closures	Closure, Intermediate, JavaScript
		Closures are functions that refer to independent (free) variables. In other words, the function defined in the closure 'remembers' the environment in which it was created.
5	Concurrency model and Event Loop	Advanced, JavaScript
		JavaScript has a concurrency model based on an "event loop". This model is quite different than the model in other languages like C or Java.
6	Enumerability and ownership of properties	JavaScript
		Enumerable properties are those which can be iterated by a for..in loop. Ownership of properties is determined by whether the property belongs to the object directly and not to its prototype chain. Properties of an object can also be retrieved in total. There are a number of built-in means of detecting, iterating/enumerating, and retrieving object properties, with the chart showing which are available. Some sample code follows which demonstrates how to obtain the missing categories.
7	Equality comparisons and sameness	Comparison, Intermediate, JavaScript, Sameness, equality
		Briefly, double equals will perform a type conversion when comparing two things; triple equals will do the same comparison without type conversion (by simply always returning false if the types differ); and Object.is will behave the same way as triple equals, but with special handling for NaN and -0 and +0 so that the last two are not said to be the same, while Object.is(NaN, NaN) will be true. (Comparing NaN with NaN ordinarily—i.e., using either double equals or triple equals—evaluates to false, because IEEE 754 says so.) Do note that the distinction between these all have to do with their handling of primitives; none of them compares whether the parameters are conceptually similar in structure. For any non-primitive objects x and y which have the same structure but are distinct objects themselves, all of the above forms will evaluate to false.
8	Index	JavaScript, MDN, meta
		This page lists all MDN JavaScript pages along with their summary and tags.
9	Inheritance and the prototype chain	Inheritance, Intermediate, JavaScript, OOP
		JavaScript is a bit confusing for developers experienced in class-based languages (like Java or C++), as it is dynamic and does not provide a class implementation per se (the class keyword is introduced in ES6, but is syntactical sugar, JavaScript will remain prototype-based).
10	Introduction to Object-Oriented JavaScript	Constructor, Encapsulation, Inheritance, Intermediate, JavaScript, Members, Namespace, OOP, Object, Object-Oriented
		Object-oriented to the core, JavaScript features powerful, flexible OOP capabilities. This article starts with an introduction to object-oriented programming, then reviews the JavaScript object model, and finally demonstrates concepts of object-oriented programming in JavaScript.
11	JavaScript Guide	Guide, JavaScript, l10n:priority
		The JavaScript Guide shows you how to use JavaScript and gives an overview of the language. If you want to get started with JavaScript or programming in general, consult the articles in the learning area. If you need exhaustive information about a language feature, have a look at the JavaScript reference.
12	Control flow and error handling	Beginner, Guide, JavaScript
		JavaScript supports a compact set of statements, specifically control flow statements, that you can use to incorporate a great deal of interactivity in your application. This chapter provides an overview of these statements.
13	Details of the object model	Guide, Intermediate, JavaScript, Object
		JavaScript is an object-based language based on prototypes, rather than being class-based. Because of this different basis, it can be less apparent how JavaScript allows you to create hierarchies of objects and to have inheritance of properties and their values. This chapter attempts to clarify the situation.
14	Expressions and operators	Beginner, Expressions, Guide, JavaScript, Operators
		This chapter describes JavaScript's expressions and operators, including assignment, comparison, arithmetic, bitwise, logical, string, ternary and more.
15	Functions	Beginner, Functions, Guide, JavaScript
		Functions are one of the fundamental building blocks in JavaScript. A function is a JavaScript procedure—a set of statements that performs a task or calculates a value. To use a function, you must define it somewhere in the scope from which you wish to call it.
16	Grammar and types	Guide, JavaScript
		This chapter discusses JavaScript's basic grammar, variable declarations, data types and literals.
17	Indexed collections	Guide, JavaScript, Method
		This chapter introduces collections of data which are ordered by an index value. This includes arrays and array-like constructs such as Array objects and TypedArray objects.
18	Introduction	Guide, JavaScript
		This chapter introduces JavaScript and discusses some of its fundamental concepts.
19	Iterators and generators	Guide, Intermediate, JavaScript
		Processing each of the items in a collection is a very common operation. JavaScript provides a number of ways of iterating over a collection, from simple for loops to map(), filter() and array comprehensions. Iterators and Generators bring the concept of iteration directly into the core language and provide a mechanism for customizing the behavior of for...of loops.
20	Keyed collections	Collections, Guide, JavaScript, Map, set
		This chapter introduces collections of data which are ordered by a key; Map and Set objects contain elements which are iterable in the order of insertion.
21	Loops and iteration	Guide, JavaScript, Loop, Syntax
		Loops offer a quick and easy way to do something repeatedly. This chapter of the JavaScript Guide introduces the different iteration statements available to JavaScript.
22	Meta programming	Guide, JavaScript, Proxy, Reflect
		Starting with ECMAScript 6, JavaScript gains support for the Proxy and Reflect objects allowing you to intercept and define custom behavior for fundamental language operations (e.g. property lookup, assignment, enumeration, function invocation, etc). With the help of these two objects you are able to program at the meta level of JavaScript.
23	Numbers and dates	Guide, JavaScript
		This chapter introduces how to work with numbers and dates in JavaScript.
24	Regular Expressions	Guide, Intermediate, JavaScript, Reference, Regular Expressions, Réference, Référence
		Regular expressions are patterns used to match character combinations in strings. In JavaScript, regular expressions are also objects. These patterns are used with the exec and test methods of RegExp, and with the match, replace, search, and split methods of String. This chapter describes JavaScript regular expressions.
25	Text formatting	Guide, JavaScript
		This chapter introduces how to work with strings and text in JavaScript.
26	Working with objects	Beginner, Comparing object, Constructor, Document, Guide, JavaScript, Object
		JavaScript is designed on a simple object-based paradigm. An object is a collection of properties, and a property is an association between a name and a value. A property's value can be a function, in which case the property is known as a method. In addition to objects that are predefined in the browser, you can define your own objects. This chapter describes how to use objects, properties, functions, and methods, and how to create your own objects.
27	JavaScript data types and data structures	Beginner, JavaScript, Types
		Programming languages all have built-in data structures, but these often differ from one language to another. This article attempts to list the built-in data structures available in JavaScript and what properties they have; these can be used to build other data structures. When possible, comparisons with other languages are drawn.
28	JavaScript language resources	Advanced, JavaScript
		ECMAScript is the scripting language that forms the basis of JavaScript. ECMAScript is standardized by the Ecma International standards organization in the ECMA-262 and ECMA-402 specifications. The following ECMAScript standards have been approved:
29	JavaScript reference	JavaScript
		This part of the JavaScript section on MDN serves as a repository of facts about the JavaScript language. Read more about this reference.
30	About this reference	JavaScript
		The JavaScript reference serves as a repository of facts about the JavaScript language. The entire language is described here in detail. As you write JavaScript code, you'll refer to these pages often (thus the title "JavaScript reference"). If you're learning JavaScript, or need help understanding some of its capabilities or features, check out the JavaScript guide.
31	Classes	Classes, ECMAScript6, Experimental, Expérimental, Intermediate, JavaScript, NeedsContent, Reference, Réference, Référence
		JavaScript classes are introduced in ECMAScript 6 and are syntactical sugar over JavaScript's existing prototype-based inheritance. The class syntax is not introducing a new object-oriented inheritance model to JavaScript. JS classes provide a much simpler and clearer syntax to create objects and dealing with inheritance.
32	constructor	Classes, ECMAScript6, Experimental, Expérimental, JavaScript
		The constructor method is a special method for creating and initializing an object created with a class.
33	extends	Classes, ECMAScript6, Experimental, Expérimental, JavaScript
		The extends keyword is used in a class declarations or class expressions to create a class with a child of another class.
34	static	Classes, ECMAScript6, Experimental, Expérimental, JavaScript
		The static keyword defines a static method for a class.
35	Deprecated and obsolete features	Deprecated, JavaScript, Obsolete
		This page lists features of JavaScript that are deprecated (that is, still available but planned for removal) and obsolete (that is, no longer usable).
36	The legacy Iterator protocol	JavaScript, Legacy Iterator
		Firefox, prior to version 26 implemented another iterator protocol that is similar to the standard ES6 Iterator protocol.
37	Expressions and operators	JavaScript, Operators
		This chapter documents all the JavaScript language operators, expressions and keywords.
38	Arithmetic operators	JavaScript, Operator
		Arithmetic operators take numerical values (either literals or variables) as their operands and return a single numerical value. The standard arithmetic operators are addition (+), subtraction (-), multiplication (*), and division (/).
39	Array comprehensions	ECMAScript7, JavaScript, Operator, Reference, Réference, Référence
		The array comprehension syntax is a JavaScript expression which allows you to quickly assemble a new array based on an existing one. Comprehensions exist in many programming languages and the upcoming ECMAScript 7 standard defines array comprehensions for JavaScript.
40	Assignment operators	JavaScript, Operator
		An assignment operator assigns a value to its left operand based on the value of its right operand.
41	Bitwise operators	JavaScript, Operator
		Bitwise operators treat their operands as a sequence of 32 bits (zeroes and ones), rather than as decimal, hexadecimal, or octal numbers. For example, the decimal number nine has a binary representation of 1001. Bitwise operators perform their operations on such binary representations, but they return standard JavaScript numerical values.
42	Comma operator	JavaScript, Operator
		The comma operator evaluates each of its operands (from left to right) and returns the value of the last operand.
43	Comparison operators	JavaScript, Operator
		JavaScript has both strict and type–converting comparisons. A strict comparison (e.g., ===) is only true if the operands are of the same type. The more commonly used abstract comparison (e.g. ==) converts the operands to the same Type before making the comparison. For relational abstract comparisons (e.g., <=), the operands are first converted to primitives, then to the same type, before comparison.
44	Conditional (ternary) Operator	JavaScript, Operator
		The conditional (ternary) operator is the only JavaScript operator that takes three operands. This operator is frequently used as a shortcut for the if statement.
45	Destructuring assignment	Destructuring, JavaScript, Operator
		The destructuring assignment syntax is a JavaScript expression that makes it possible to extract data from arrays or objects using a syntax that mirrors the construction of array and object literals.
46	Expression closures	Functions, JavaScript, Non-standard, Reference, Réference, Référence
		Expression closures are a shorthand function syntax for writing simple functions.
47	Generator comprehensions	ECMAScript7, Iterator, JavaScript, Reference, Réference, Référence
		The generator comprehension syntax is a JavaScript expression which allows you to quickly assemble a new generator function based on an existing iterable object. Comprehensions exist in many programming languages and the upcoming ECMAScript 7 standard defines array comprehensions for JavaScript.
48	Grouping operator	JavaScript, Operator, Primary Expressions
		The grouping operator ( ) controls the precedence of evaluation in expressions.
49	Legacy generator function expression	JavaScript, Legacy Iterator, Non-standard, Reference, Réference, Référence
		The function keyword can be used to define a legacy generator function inside an expression. To make the function a legacy generator, the function body should contain at least one yield expression.
50	Logical Operators	JavaScript, Operator
		Logical operators are typically used with Boolean (logical) values. When they are, they return a Boolean value. However, the && and || operators actually return the value of one of the specified operands, so if these operators are used with non-Boolean values, they may return a non-Boolean value.
51	Object initializer	JavaScript, Object, Primary Expression
		Objects can be initialized using new Object(), Object.create(), or using the literal notation (initializer notation). An object initializer is a list of zero or more pairs of property names and associated values of an object, enclosed in curly braces ({}).
52	Operator precedence	JavaScript, Operator, operator details, operator precedence
		Operator precedence determines the order in which operators are evaluated. Operators with higher precedence are evaluated first.
53	Property accessors	JavaScript, Operator
		Property accessors provide access to an object's properties by using the dot notation or the bracket notation.
54	Spread operator	Experimental, Expérimental, JavaScript, Operator
		The spread operator allows an expression to be expanded in places where multiple arguments (for function calls) or multiple elements (for array literals) are expected.
55	class expression	ECMAScript6, Experimental, Expression, Expérimental, JavaScript, Operator, Reference, Réference, Référence
		The class expression is one way define a class in ECMAScript 6. Similar to function expressions, class expressions can be named or unnamed. If named, the name of the class is local the class body only. JavaScript classes are using prototype-based inheritance.
56	delete operator	JavaScript, Operator, Unary
		The delete operator removes a property from an object.
57	function expression	Function, JavaScript, Operator, Primary Expressions
		The function keyword can be used to define a function inside an expression.
58	function* expression	ECMAScript6, Experimental, Expérimental, Function, Iterator, JavaScript, Operator, Primary Expression
		The function* keyword can be used to define a generator function inside an expression.
59	in operator	JavaScript, Operator, Relational Operators
		The in operator returns true if the specified property is in the specified object.
60	instanceof	JavaScript, Object, Operator, Relational Operators, instanceof, prototype
		The instanceof operator tests whether an object has in its prototype chain the prototype property of a constructor.
61	new operator	JavaScript, Left-hand-side expressions, Operator
		The new operator creates an instance of a user-defined object type or of one of the built-in object types that has a constructor function.
62	super	Classes, ECMAScript6, Experimental, Expérimental, JavaScript, Left-hand-side expressions, Operator
		The super keyword is used to call functions on an object's parent.
63	this	JavaScript, Operator, Primary Expressions, Reference, Réference, Référence
		A function's this keyword behaves a little differently in JavaScript compared to other languages. It also has some differences between strict mode and non-strict mode.
64	typeof	JavaScript, Operator, Unary
		The typeof operator returns a string indicating the type of the unevaluated operand.
65	void operator	JavaScript, Operator, Unary
		The void operator evaluates the given expression and then returns undefined.
66	yield	ECMAScript6, Experimental, Expérimental, Generators, Iterator, JavaScript, Operator
		The yield keyword is used to pause and resume a generator function (function* or legacy generator function).
67	yield*	ECMAScript6, Experimental, Expérimental, Generators, Iterable, Iterator, JavaScript, Operator, Reference, Réference, Référence
		The yield* expression is used to delegate to another generator or iterable object.
68	Functions	Function, Functions, JavaScript
		Generally speaking, a function is a "subprogram" that can be called by code external (or internal in the case of recursion) to the function. Like the program itself, a function is composed of a sequence of statements called the function body. Values can be passed to a function, and the function can return a value.
69	Arguments object	Functions, JavaScript, arguments
		The arguments object is an Array-like object corresponding to the arguments passed to a function.
70	arguments.callee	Deprecated, Functions, JavaScript, Property, arguments
		The arguments.callee property contains the currently executing function.
71	arguments.caller	Functions, JavaScript, Obsolete, Property, arguments
		The obsolete arguments.caller property used to provide the function that invoked the currently executing function. This property has been removed and no longer works.
72	arguments.length	Functions, JavaScript, Property, arguments
		The arguments.length property contains the number of arguments passed to the function.
73	Arrow functions	ECMAScript6, Functions, JavaScript
		An arrow function expression (also known as fat arrow function) has a shorter syntax compared to function expressions and lexically binds the this value. Arrow functions are always anonymous.
74	Default parameters	ECMAScript6, Experimental, Expérimental, Functions, JavaScript
		Default function parameters allow formal parameters to be initialized with default values if no value or undefined is passed.
75	Method definitions	ECMAScript6, Functions, JavaScript, Object, Syntax
		Starting with ECMAScript 6, a shorter syntax for method definitions on objects initializers is introduced. It is a shorthand for a function assigned to the method's name.
76	Rest parameters	Functions, JavaScript, Rest, Rest parameters
		The rest parameter syntax allows to represent an indefinite number of arguments as an array.
77	getter	ECMAScript5, ECMAScript6, Functions, JavaScript
		The get syntax binds an object property to a function that will be called when that property is looked up.
78	setter	ECMAScript5, Functions, JavaScript
		The set syntax binds an object property to a function to be called when there is an attempt to set that property.
79	Iteration protocols	ECMAScript6, Experimental, Expérimental, Intermediate, Iterable, Iterator, JavaScript
		One addition of ECMAScript 6 is not new syntax or a new built-in, but a protocol. This protocol can be implemented by any object respecting some conventions.
80	JavaScript methods index	JavaScript
		This article entails a listing of all JavaScript methods documented on MDN sorted alphabetically.
81	JavaScript properties index	JavaScript
		This article entails a listing of all JavaScript properties documented on MDN sorted alphabetically.
82	Lexical grammar	JavaScript, Lexical Grammar
		This section describes JavaScript's lexical grammar. The source text of ECMAScript scripts gets scanned from left to right and is converted into a sequence of input elements which are tokens, control characters, line terminators, comments or white space. ECMAScript also defines certain keywords and literals and has rules for automatic insertion of semicolons to end statements.
83	Standard built-in objects	JavaScript, Reference, Réference, Référence, objects
		This chapter documents all of JavaScript's standard, built-in objects, including their methods and properties.
84	Array	Array, JavaScript
		The JavaScript Array global object is a constructor for arrays, which are high-level, list-like objects.
85	Array.from()	Array, ECMAScript6, Experimental, Expérimental, JavaScript, Method, from, polyfill
		The Array.from() method creates a new Array instance from an array-like or iterable object.
86	Array.isArray()	Array, ECMAScript5, JavaScript, Method, polyfill
		The Array.isArray() method returns true if an object is an array, false if it is not.
87	Array.observe()	Array, ECMAScript7, Experimental, Expérimental, JavaScript, Method
		The Array.observe() method is used for asynchronously observing changes to Arrays, similar to Object.observe() for objects. It provides a stream of changes in order of occurrence. It's equivalent to Object.observe() invoked with the accept type list ["add", "update", "delete", "splice"].
88	Array.of()	Array, ECMAScript6, Experimental, Expérimental, JavaScript, Method, polyfill
		The Array.of() method creates a new Array instance with a variable number of arguments, regardless of number or type of the arguments.
89	Array.prototype	Array, JavaScript, Property
		The Array.prototype property represents the prototype for the Array constructor.
90	Array.prototype.concat()	Array, JavaScript, Method, prototype
		The concat() method returns a new array comprised of the array on which it is called joined with the array(s) and/or value(s) provided as arguments.
91	Array.prototype.copyWithin()	Array, ECMAScript6, Experimental, Expérimental, JavaScript, Method, polyfill, prototype
		The copyWithin() method copies the sequence of array elements within the array to the position starting at target. The copy is taken from the index positions of the second and third arguments start and end. The end argument is optional and defaults to the length of the array.
92	Array.prototype.entries()	Array, ECMAScript6, Experimental, Expérimental, Iterator, JavaScript, Method, prototype
		The entries() method returns a new Array Iterator object that contains the key/value pairs for each index in the array.
93	Array.prototype.every()	Array, ECMAScript5, JavaScript, JavaScript 1.6, Method, polyfill, prototype
		The every() method tests whether all elements in the array pass the test implemented by the provided function.
94	Array.prototype.fill()	Array, ECMAScript6, Experimental, Expérimental, JavaScript, Method, polyfill, prototype
		The fill() method fills all the elements of an array from a start index to an end index with a static value.
95	Array.prototype.filter()	Array, ECMAScript5, JavaScript, Method, Reference, Réference, Référence, polyfill, prototype
		The filter() method creates a new array with all elements that pass the test implemented by the provided function.
96	Array.prototype.find()	Array, ECMAScript6, Experimental, Expérimental, JavaScript, Method, polyfill, prototype
		The find() method returns a value in the array, if an element in the array satisfies the provided testing function. Otherwise undefined is returned.
97	Array.prototype.findIndex()	Array, ECMAScript6, Experimental, Expérimental, JavaScript, Method, polyfill, prototype
		The findIndex() method returns an index in the array, if an element in the array satisfies the provided testing function. Otherwise -1 is returned.
98	Array.prototype.forEach()	Array, ECMAScript5, JavaScript, JavaScript 1.6, Method, Reference, Réference, Référence, polyfill, prototype
		The forEach() method executes a provided function once per array element.
99	Array.prototype.includes()	Array, ECMAScript7, Experimental, Expérimental, JavaScript, Method, polyfill, prototype
		The includes() method determines whether an array includes a certain element, returning true or false as appropriate.
100	Array.prototype.indexOf()	Array, JavaScript, Method, Reference, Réference, Référence, polyfill, prototype
		The indexOf() method returns the first index at which a given element can be found in the array, or -1 if it is not present.
101	Array.prototype.join()	Array, JavaScript, Method, prototype
		The join() method joins all elements of an array into a string.
102	Array.prototype.keys()	Array, ECMAScript6, Experimental, Expérimental, Iterator, JavaScript, Method, prototype
		The keys() method returns a new Array Iterator that contains the keys for each index in the array.
103	Array.prototype.lastIndexOf()	Array, ECMAScript5, JavaScript, Method, polyfill, prototype
		The lastIndexOf() method returns the last index at which a given element can be found in the array, or -1 if it is not present. The array is searched backwards, starting at fromIndex.
104	Array.prototype.length	Array, JavaScript, Property
		The length property represents an unsigned, 32-bit integer that specifies the number of elements in an array.
105	Array.prototype.map()	Array, ECMAScript5, JavaScript, JavaScript 1.6, Method, polyfill, prototype
		The map() method creates a new array with the results of calling a provided function on every element in this array.
106	Array.prototype.pop()	Array, JavaScript, Method, prototype
		The pop() method removes the last element from an array and returns that element.
107	Array.prototype.push()	Array, JavaScript, Method, Reference, Référence, prototype
		The push() method adds one or more elements to the end of an array and returns the new length of the array.
108	Array.prototype.reduce()	Array, ECMAScript5, JavaScript, JavaScript 1.8, Method, polyfill, prototype
		The reduce() method applies a function against an accumulator and each value of the array (from left-to-right) has to reduce it to a single value.
109	Array.prototype.reduceRight()	Array, ECMAScript5, JavaScript, JavaScript 1.8, Method, polyfill, prototype
		The reduceRight() method applies a function against an accumulator and each value of the array (from right-to-left) has to reduce it to a single value.
110	Array.prototype.reverse()	Array, JavaScript, Method, prototype
		The reverse() method reverses an array in place. The first array element becomes the last and the last becomes the first.
111	Array.prototype.shift()	Array, JavaScript, Method, prototype
		The shift() method removes the first element from an array and returns that element. This method changes the length of the array.
112	Array.prototype.slice()	Array, JavaScript, Method, prototype
		The slice() method returns a shallow copy of a portion of an array into a new array object.
113	Array.prototype.some()	Array, ECMAScript5, JavaScript, JavaScript 1.6, Method, Reference, Référence, prototype
		The some() method tests whether some element in the array passes the test implemented by the provided function.
114	Array.prototype.sort()	Array, JavaScript, Method, prototype
		The sort() method sorts the elements of an array in place and returns the array. The sort is not necessarily stable. The default sort order is according to string Unicode code points.
115	Array.prototype.splice()	Array, JavaScript, Method, Reference, Réference, Référence, prototype
		The splice() method changes the content of an array by removing existing elements and/or adding new elements.
116	Array.prototype.toLocaleString()	Array, Internationalization, JavaScript, Method, prototype
		The toLocaleString() method returns a string representing the elements of the array. The elements are converted to Strings using their toLocaleString methods and these Strings are separated by a locale-specific String (such as a comma “,”).
117	Array.prototype.toSource()	Array, JavaScript, Method, Non-standard, prototype
		The toSource() method returns a string representing the source code of the array.
118	Array.prototype.toString()	Array, JavaScript, Method, prototype
		The toString() method returns a string representing the specified array and its elements.
119	Array.prototype.unshift()	Array, JavaScript, Method, prototype
		The unshift() method adds one or more elements to the beginning of an array and returns the new length of the array.
120	Array.prototype.values()	Array, ECMAScript6, Experimental, Expérimental, Iterator, JavaScript, Method, prototype
		The values() method returns a new Array Iterator object that contains the values for each index in the array.
121	Array.prototype[@@iterator]()	Array, ECMAScript6, Experimental, Expérimental, Iterator, JavaScript, Method, Reference, Référence, prototype
		The initial value of the @@iterator property is the same function object as the initial value of the values() property.
122	ArrayBuffer	ArrayBuffer, Constructor, JavaScript, TypedArrays
		The ArrayBuffer object is used to represent a generic, fixed-length raw binary data buffer. You can not directly manipulate the contents of an ArrayBuffer; instead, you create one of the typed array objects or a DataView object which represents the buffer in a specific format, and use that to read and write the contents of the buffer.
123	ArrayBuffer.isView()	ArrayBuffer, JavaScript, Method, TypedArrays
		The ArrayBuffer.isView() method returns true if arg is a view one of the ArrayBuffer views, such as typed array objects or a DataView; false otherwise.
124	ArrayBuffer.prototype	ArrayBuffer, JavaScript, Property
		The ArrayBuffer.prototype property represents the prototype for the ArrayBuffer object.
125	ArrayBuffer.prototype.byteLength	ArrayBuffer, JavaScript, Property, prototype
		The byteLength accessor property represents the length of an ArrayBuffer in bytes.
126	ArrayBuffer.prototype.slice()	ArrayBuffer, JavaScript, Method, prototype
		The slice() method returns a new ArrayBuffer whose contents are a copy of this ArrayBuffer's bytes from begin, inclusive, up to end, exclusive.
127	ArrayBuffer.transfer()	ArrayBuffer, ECMAScript7, Experimental, Expérimental, JavaScript, Method, Reference, Référence, TypedArrays
		The static ArrayBuffer.transfer() method returns a new ArrayBuffer whose contents are taken from the oldBuffer's data and then is either truncated or zero-extended by newByteLength. If newByteLength is undefined, the byteLength of the oldBuffer is used. This operation leaves oldBuffer in a detached state.
128	Boolean	Boolean, Constructor, JavaScript
		The Boolean object is an object wrapper for a boolean value.
129	Boolean.prototype	Boolean, JavaScript, Property, prototype
		The Boolean.prototype property represents the prototype for the Boolean constructor.
130	Boolean.prototype.toSource()	Boolean, JavaScript, Method, Non-standard, prototype
		The toSource() method returns a string representing the source code of the object.
131	Boolean.prototype.toString()	Boolean, JavaScript, Method, prototype
		The toString() method returns a string representing the specified Boolean object.
132	Boolean.prototype.valueOf()	Boolean, JavaScript, Method, prototype
		The valueOf() method returns the primitive value of a Boolean object.
133	DataView	Constructor, DataView, JavaScript, TypedArrays
		The DataView view provides a low-level interface for reading data from and writing it to an ArrayBuffer.
134	DataView.prototype	DataView, JavaScript, Property
		The DataView.prototype property represents the prototype for the DataView object.
135	DataView.prototype.buffer	DataView, JavaScript, Property, TypedArrays, prototype
		The buffer accessor property represents the ArrayBuffer referenced by the DataView at construction time.
136	DataView.prototype.byteLength	DataView, JavaScript, Property, TypedArrays, prototype
		The byteLength accessor property represents the length (in bytes) of this view from the start of its ArrayBuffer.
137	DataView.prototype.byteOffset	DataView, JavaScript, Property, TypedArrays, prototype
		The byteOffset accessor property represents the offset (in bytes) of this view from the start of its ArrayBuffer.
138	DataView.prototype.getFloat32()	DataView, JavaScript, Method, TypedArrays, prototype
		The getFloat32() method gets a signed 32-bit float (float) at the specified byte offset from the start of the DataView.
139	DataView.prototype.getFloat64()	DataView, JavaScript, Method, TypedArrays, prototype
		The getFloat64() method gets a signed 64-bit float (double) at the specified byte offset from the start of the DataView.
140	DataView.prototype.getInt16()	DataView, JavaScript, Method, TypedArrays, prototype
		The getInt16() method gets a signed 16-bit integer (short) at the specified byte offset from the start of the DataView.
141	DataView.prototype.getInt32()	DataView, JavaScript, Method, TypedArrays, prototype
		The getInt32() method gets a signed 32-bit integer (long) at the specified byte offset from the start of the DataView.
142	DataView.prototype.getInt8()	DataView, JavaScript, Method, TypedArrays, prototype
		The getInt8() method gets a signed 8-bit integer (byte) at the specified byte offset from the start of the DataView.
143	DataView.prototype.getUint16()	DataView, JavaScript, Method, TypedArrays, prototype
		The getUint16() method gets an unsigned 16-bit integer (unsigned short) at the specified byte offset from the start of the DataView.
144	DataView.prototype.getUint32()	DataView, JavaScript, Method, TypedArrays, prototype
		The getUint32() method gets an unsigned 32-bit integer (unsigned long) at the specified byte offset from the start of the DataView.
145	DataView.prototype.getUint8()	DataView, JavaScript, Method, TypedArrays, prototype
		The getUint8() method gets an unsigned 8-bit integer (unsigned byte) at the specified byte offset from the start of the DataView.
146	DataView.prototype.setFloat32()	DataView, JavaScript, Method, TypedArrays, prototype
		The setFloat32() method stores a signed 32-bit float (float) value at the specified byte offset from the start of the DataView.
147	DataView.prototype.setFloat64()	DataView, JavaScript, Method, TypedArrays, prototype
		The setFloat64() method stores a signed 64-bit float (double) value at the specified byte offset from the start of the DataView.
148	DataView.prototype.setInt16()	DataView, JavaScript, Method, TypedArrays, prototype
		The setInt16() method stores a signed 16-bit integer (short) value at the specified byte offset from the start of the DataView.
149	DataView.prototype.setInt32()	DataView, JavaScript, Method, TypedArrays, prototype
		The setInt32() method stores a signed 32-bit integer (long) value at the specified byte offset from the start of the DataView.
150	DataView.prototype.setInt8()	DataView, JavaScript, Method, TypedArrays, prototype
		The setInt8() method stores a signed 8-bit integer (byte) value at the specified byte offset from the start of the DataView.
151	DataView.prototype.setUint16()	DataView, JavaScript, Method, TypedArrays, prototype
		The setUint16() method stores an unsigned 16-bit integer (unsigned short) value at the specified byte offset from the start of the DataView.
152	DataView.prototype.setUint32()	DataView, JavaScript, Method, TypedArrays, prototype
		The setUint32() method stores an unsigned 32-bit integer (unsigned long) value at the specified byte offset from the start of the DataView.
153	DataView.prototype.setUint8()	DataView, JavaScript, Method, TypedArrays, prototype
		The setUint8() method stores an unsigned 8-bit integer (byte) value at the specified byte offset from the start of the DataView.
154	Date	Date, JavaScript
		Creates a JavaScript Date instance that represents a single moment in time. Date objects are based on a time value that is the number of milliseconds since 1 January, 1970 UTC.
155	Date.UTC()	Date, JavaScript, Method, Reference, Référence
		The Date.UTC() method accepts the same parameters as the longest form of the constructor, and returns the number of milliseconds in a Date object since January 1, 1970, 00:00:00, universal time.
156	Date.now()	Date, JavaScript, Method, Reference, Référence, polyfill
		The Date.now() method returns the number of milliseconds elapsed since 1 January 1970 00:00:00 UTC.
157	Date.parse()	Date, JavaScript, Method, Reference, Référence
		The Date.parse() method parses a string representation of a date, and returns the number of milliseconds since January 1, 1970, 00:00:00 UTC.
158	Date.prototype	Date, JavaScript, Property, Reference, Référence, prototype
		The Date.prototype property represents the prototype for the Date constructor.
159	Date.prototype.getDate()	Date, JavaScript, Method, Reference, Référence, prototype
		The getDate() method returns the day of the month for the specified date according to local time.
160	Date.prototype.getDay()	Date, JavaScript, Method, Reference, Référence, prototype
		The getDay() method returns the day of the week for the specified date according to local time, where 0 represents Sunday.
161	Date.prototype.getFullYear()	Date, JavaScript, Method, Reference, Référence, prototype
		The getFullYear() method returns the year of the specified date according to local time.
162	Date.prototype.getHours()	Date, JavaScript, Method, Reference, Référence, prototype
		The getHours() method returns the hour for the specified date, according to local time.
163	Date.prototype.getMilliseconds()	Date, JavaScript, Method, Reference, Référence, prototype
		The getMilliseconds() method returns the milliseconds in the specified date according to local time.
164	Date.prototype.getMinutes()	Date, JavaScript, Method, Reference, Référence, prototype
		The getMinutes() method returns the minutes in the specified date according to local time.
165	Date.prototype.getMonth()	Date, JavaScript, Method, Reference, Référence, prototype
		The getMonth() method returns the month in the specified date according to local time, as a zero-based value (where zero indicates the first month of the year).
166	Date.prototype.getSeconds()	Date, JavaScript, Method, Reference, Référence, prototype
		The getSeconds() method returns the seconds in the specified date according to local time.
167	Date.prototype.getTime()	Date, JavaScript, Method, Reference, Référence, prototype
		The getTime() method returns the numeric value corresponding to the time for the specified date according to universal time.
168	Date.prototype.getTimezoneOffset()	Date, JavaScript, Method, Reference, Référence, prototype
		The getTimezoneOffset() method returns the time-zone offset from UTC, in minutes, for the current locale.
169	Date.prototype.getUTCDate()	Date, JavaScript, Method, Reference, Référence, prototype
		The getUTCDate() method returns the day (date) of the month in the specified date according to universal time.
170	Date.prototype.getUTCDay()	Date, JavaScript, Method, Reference, Référence, prototype
		The getUTCDay() method returns the day of the week in the specified date according to universal time, where 0 represents Sunday.
171	Date.prototype.getUTCFullYear()	Date, JavaScript, Method, Reference, Référence, prototype
		The getUTCFullYear() method returns the year in the specified date according to universal time.
172	Date.prototype.getUTCHours()	Date, JavaScript, Method, Reference, Référence, prototype
		The getUTCHours() method returns the hours in the specified date according to universal time.
173	Date.prototype.getUTCMilliseconds()	Date, JavaScript, Method, Reference, Référence, prototype
		The getUTCMilliseconds() method returns the milliseconds in the specified date according to universal time.
174	Date.prototype.getUTCMinutes()	Date, JavaScript, Method, Reference, Référence, prototype
		The getUTCMinutes() method returns the minutes in the specified date according to universal time.
175	Date.prototype.getUTCMonth()	Date, JavaScript, Method, Reference, Référence, prototype
		The getUTCMonth() returns the month of the specified date according to universal time, as a zero-based value (where zero indicates the first month of the year).
176	Date.prototype.getUTCSeconds()	Date, JavaScript, Method, Reference, Référence, prototype
		The getUTCSeconds() method returns the seconds in the specified date according to universal time.
177	Date.prototype.getYear()	Date, Deprecated, JavaScript, Method, Reference, Référence, prototype
		The getYear() method returns the year in the specified date according to local time. Because getYear() does not return full years ("year 2000 problem"), it is no longer used and has been replaced by the getFullYear() method.
178	Date.prototype.setDate()	Date, JavaScript, Method, Reference, Réference, Référence, prototype
		The setDate() method sets the day of the Date object relative to the beginning of the currently set month.
179	Date.prototype.setFullYear()	Date, JavaScript, Method, Reference, Réference, Référence, prototype
		The setFullYear() method sets the full year for a specified date according to local time. Returns new timestamp.
180	Date.prototype.setHours()	Date, JavaScript, Method, Reference, Référence, prototype
		The setHours() method sets the hours for a specified date according to local time, and returns the number of milliseconds since 1 January 1970 00:00:00 UTC until the time represented by the updated Date instance.
181	Date.prototype.setMilliseconds()	Date, JavaScript, Method, Reference, Référence, prototype
		The setMilliseconds() method sets the milliseconds for a specified date according to local time.
182	Date.prototype.setMinutes()	Date, JavaScript, Method, Reference, Réference, Référence, prototype
		The setMinutes() method sets the minutes for a specified date according to local time.
183	Date.prototype.setMonth()	Date, JavaScript, Method, Reference, Réference, Référence, prototype
		The setMonth() method sets the month for a specified date according to the currently set year.
184	Date.prototype.setSeconds()	Date, JavaScript, Method, Reference, Référence, prototype
		The setSeconds() method sets the seconds for a specified date according to local time.
185	Date.prototype.setTime()	Date, JavaScript, Method, Reference, Référence, prototype
		The setTime() method sets the Date object to the time represented by a number of milliseconds since January 1, 1970, 00:00:00 UTC.
186	Date.prototype.setUTCDate()	Date, JavaScript, Method, Reference, Référence, prototype
		The setUTCDate() method sets the day of the month for a specified date according to universal time.
187	Date.prototype.setUTCFullYear()	Date, JavaScript, Method, Reference, Référence, prototype
		The setUTCFullYear() method sets the full year for a specified date according to universal time.
188	Date.prototype.setUTCHours()	Date, JavaScript, Method, Reference, Référence, prototype
		The setUTCHours() method sets the hour for a specified date according to universal time, and returns the number of milliseconds since 1 January 1970 00:00:00 UTC until the time represented by the updated Date instance.
189	Date.prototype.setUTCMilliseconds()	Date, JavaScript, Method, Reference, Référence, prototype
		The setUTCMilliseconds() method sets the milliseconds for a specified date according to universal time.
190	Date.prototype.setUTCMinutes()	Date, JavaScript, Method, Reference, Référence, prototype
		The setUTCMinutes() method sets the minutes for a specified date according to universal time.
191	Date.prototype.setUTCMonth()	Date, JavaScript, Method, Reference, Référence, prototype
		The setUTCMonth() method sets the month for a specified date according to universal time.
192	Date.prototype.setUTCSeconds()	Date, JavaScript, Method, Reference, Référence, prototype
		The setUTCSeconds() method sets the seconds for a specified date according to universal time.
193	Date.prototype.setYear()	Date, Deprecated, JavaScript, Method, Reference, Référence, prototype
		The setYear() method sets the year for a specified date according to local time. Because setYear() does not set full years ("year 2000 problem"), it is no longer used and has been replaced by the setFullYear() method.
194	Date.prototype.toDateString()	Date, JavaScript, Method, Reference, Référence, prototype
		The toDateString() method returns the date portion of a Date object in human readable form in American English.
195	Date.prototype.toGMTString()	Date, Deprecated, JavaScript, Method, Reference, Référence, prototype
		The toGMTString() method converts a date to a string, using Internet Greenwich Mean Time (GMT) conventions. The exact format of the value returned by toGMTString() varies according to the platform and browser, in general it should represent a human readable date string.
196	Date.prototype.toISOString()	Date, JavaScript, Method, Reference, Référence, polyfill, prototype
		The toISOString() method returns a string in simplified extended ISO format (ISO 8601), which is always 24 characters long: YYYY-MM-DDTHH:mm:ss.sssZ. The timezone is always zero UTC offset, as denoted by the suffix "Z".
197	Date.prototype.toJSON()	Date, JavaScript, Method, Reference, Référence, prototype
		The toJSON() method returns a string representation of the Date object.
198	Date.prototype.toLocaleDateString()	Date, Internationalization, JavaScript, Method, Reference, Référence, prototype
		The toLocaleDateString() method returns a string with a language sensitive representation of the date portion of this date. The new locales and options arguments let applications specify the language whose formatting conventions should be used and allow to customize the behavior of the function. In older implementations, which ignore the locales and options arguments, the locale used and the form of the string returned are entirely implementation dependent.
199	Date.prototype.toLocaleFormat()	Date, JavaScript, Method, Non-standard, Reference, Réference, Référence, prototype
		The non-standard toLocaleFormat() method converts a date to a string using the specified formatting. Intl.DateTimeFormat is an alternative to format dates in a standards-compliant way. See also the newer version of Date.prototype.toLocaleDateString().
200	Date.prototype.toLocaleString()	Date, Internationalization, JavaScript, Method, Reference, Référence, prototype
		The toLocaleString() method returns a string with a language sensitive representation of this date. The new locales and options arguments let applications specify the language whose formatting conventions should be used and customize the behavior of the function. In older implementations, which ignore the locales and options arguments, the locale used and the form of the string returned are entirely implementation dependent.
201	Date.prototype.toLocaleTimeString()	Date, Internationalization, JavaScript, Method, Reference, Référence, prototype
		The toLocaleTimeString() method returns a string with a language sensitive representation of the time portion of this date. The new locales and options arguments let applications specify the language whose formatting conventions should be used and customize the behavior of the function. In older implementations, which ignore the locales and options arguments, the locale used and the form of the string returned are entirely implementation dependent.
202	Date.prototype.toSource()	Date, JavaScript, Method, Non-standard, Reference, Référence, prototype
		The toSource() method returns a string representing the source code of the object.
203	Date.prototype.toString()	Date, JavaScript, Method, Reference, Référence, prototype
		The toString() method returns a string representing the specified Date object.
204	Date.prototype.toTimeString()	Date, JavaScript, Method, Reference, Référence, prototype
		The toTimeString() method returns the time portion of a Date object in human readable form in American English.
205	Date.prototype.toUTCString()	Date, JavaScript, Method, Reference, Référence, prototype
		The toUTCString() method converts a date to a string, using the UTC time zone.
206	Date.prototype.valueOf()	Date, JavaScript, Method, Reference, Référence, prototype
		The valueOf() method returns the primitive value of a Date object.
207	Error	Error, JavaScript
		The Error constructor creates an error object. Instances of Error objects are thrown when runtime errors occur. The Error object can also be used as a base objects for user-defined exceptions. See below for standard built-in error types.
208	Error.prototype	Error, JavaScript, Property
		The Error.prototype property represents the prototype for the Error constructor.
209	Error.prototype.columnNumber	Error, JavaScript, Non-standard, Property, prototype
		The columnNumber property contains the column number in the line of the file that raised this error.
210	Error.prototype.fileName	Error, JavaScript, Non-standard, Property, prototype
		The fileName property contains the path to the file that raised this error.
211	Error.prototype.lineNumber	Error, JavaScript, Non-standard, Property, Reference, Référence, prototype
		The lineNumber property contains the line number in the file that raised this error.
212	Error.prototype.message	Error, JavaScript, Property, prototype
		The message property is a human-readable description of the error.
213	Error.prototype.name	Error, JavaScript, Property, prototype
		The name property represents a name for the type of error. The initial value is "Error".
214	Error.prototype.stack	Error, JavaScript, Non-standard, Property, Reference, Réference, Référence, prototype
		The non-standard stack property of Error objects offer a trace of which functions were called, in what order, from which line and file, and with what arguments. The stack string proceeds from the most recent calls to earlier ones, leading back to the original global scope call.
215	Error.prototype.toSource()	Error, JavaScript, Method, Non-standard, prototype
		The toSource() method returns code that could eval to the same error.
216	Error.prototype.toString()	Error, JavaScript, Method, prototype
		The toString() method returns a string representing the specified Error object.
217	EvalError	Error, EvalError, JavaScript, Reference, Réference, Référence
		The EvalError object indicates an error regarding the global eval() function.
218	EvalError.prototype	Error, EvalError, JavaScript, Property
		The EvalError.prototype property represents the prototype of the EvalError constructor.
219	Float32Array	Constructor, JavaScript, TypedArray, TypedArrays
		The Float32Array typed array represents an array of 32-bit floating point numbers (corresponding to the C float data type) in the platform byte order. If control over byte order is needed, use DataView instead. The contents are initialized to 0. Once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
220	Float64Array	Constructor, JavaScript, TypedArray, TypedArrays
		The Float64Array typed array represents an array of 64-bit floating point numbers (corresponding to the C double data type) in the platform byte order. If control over byte order is needed, use DataView instead. The contents are initialized to 0. Once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
221	Function	Constructor, Function, JavaScript
		The Function constructor creates a new Function object. In JavaScript every function is actually a Function object.
222	Function.arguments	Deprecated, Function, JavaScript, Property, arguments
		The function.arguments property refers to an an array-like object corresponding to the arguments passed to a function. Use the simple variable arguments instead.
223	Function.arity	Function, JavaScript, Obsolete, Property, Unimplemented
		The arity property used to return the number of arguments expected by the function, however, it no longer exists and has been replaced by the Function.prototype.length property.
224	Function.caller	Function, JavaScript, Non-standard, Property
		The function.caller property returns the function that invoked the specified function.
225	Function.displayName	Function, JavaScript, Non-standard, Property
		The function.displayName property returns the display name of the function.
226	Function.length	Function, JavaScript, Property
		The length property specifies the number of arguments expected by the function.
227	Function.name	ECMAScript6, Experimental, Expérimental, Function, JavaScript, Property
		The function.name property returns the name of the function.
228	Function.prototype	Function, JavaScript, Property, prototype
		The Function.prototype property represents the Function prototype object.
229	Function.prototype.apply()	Function, JavaScript, Method
		The apply() method calls a function with a given this value and arguments provided as an array (or an array-like object).
230	Function.prototype.bind()	ECMAScript5, Function, JavaScript, Method, polyfill
		The bind() method creates a new function that, when called, has its this keyword set to the provided value, with a given sequence of arguments preceding any provided when the new function is called.
231	Function.prototype.call()	Function, JavaScript, Method
		The call() method calls a function with a given this value and arguments provided individually.
232	Function.prototype.isGenerator()	Function, JavaScript, Method, Non-standard
		The isGenerator() method determines whether or not a function is a generator.
233	Function.prototype.toSource()	Function, JavaScript, Method, Non-standard
		The toSource() method returns a string representing the source code of the object.
234	Function.prototype.toString()	Function, JavaScript, Method, prototype
		The toString() method returns a string representing the source code of the function.
235	Generator	ECMAScript6, Experimental, Expérimental, Generator, JavaScript, Legacy Generator, Legacy Iterator, Reference, Réference, Référence
		The Generator object is returned by a generator function and it conforms to both the iterator and the Iterable protocol.
236	Generator.prototype.next()	ECMAScript6, Experimental, Expérimental, Generator, JavaScript, Method, Reference, Réference, Référence, prototype
		The next() method returns an object with two properties done and value. You can also provide a parameter to the next method to send a value to the generator.
237	Generator.prototype.return()	ECMAScript6, Experimental, Expérimental, Generator, JavaScript, Method, Reference, Référence, prototype
		The return() method returns the given value and finishes the generator.
238	Generator.prototype.throw()	ECMAScript6, Experimental, Expérimental, Generator, JavaScript, Method, Reference, Référence, prototype
		The throw() method throws an error to a generator.
239	GeneratorFunction	Constructor, ECMAScript6, Experimental, Expérimental, GeneratorFunction, Iterator, JavaScript, Reference, Référence
		The GeneratorFunction constructor creates a new generator function object. In JavaScript every generator function is actually a GeneratorFunction object.
240	GeneratorFunction.prototype	ECMAScript6, Experimental, Expérimental, GeneratorFunction, Iterator, JavaScript, Property, Reference, Référence, prototype
		The GeneratorFunction.prototype property represents the GeneratorFunction prototype object.
241	Infinity	JavaScript
		The global Infinity property is a numeric value representing infinity.
242	Int16Array	Constructor, JavaScript, TypedArray, TypedArrays
		The Int16Array typed array represents an array of twos-complement 16-bit signed integers in the platform byte order. If control over byte order is needed, use DataView instead. The contents are initialized to 0. Once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
243	Int32Array	Constructor, JavaScript, TypedArray, TypedArrays
		The Int32Array typed array represents an array of twos-complement 32-bit signed integers in the platform byte order. If control over byte order is needed, use DataView instead. The contents are initialized to 0. Once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
244	Int8Array	Constructor, Int8Array, JavaScript, TypedArray, TypedArrays
		The Int8Array typed array represents an array of twos-complement 8-bit signed integers. The contents are initialized to 0. Once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
245	InternalError	Error, InternalError, JavaScript, Non-standard
		The InternalError object indicates an error that occurred internally in the JavaScript engine. For example: "InternalError: too much recursion".
246	InternalError.prototype	Error, InternalError, JavaScript, Non-standard, Property
		The InternalError.prototype property represents the prototype of the InternalError constructor.
247	Intl	Internationalization, JavaScript
		The Intl object is the namespace for the ECMAScript Internationalization API, which provides language sensitive string comparison, number formatting, and date and time formatting. The constructors for Collator, NumberFormat, and DateTimeFormat objects are properties of the Intl object. This page documents these properties as well as functionality common to the internationalization constructors and other language sensitive functions.
248	Intl.Collator	Collator, Internationalization, JavaScript
		The Intl.Collator object is a constructor for collators, objects that enable language sensitive string comparison.
249	Intl.Collator.prototype	Collator, Internationalization, JavaScript, Property, prototype
		The Intl.Collator.prototype property represents the prototype object for the Intl.Collator constructor.
250	Intl.Collator.prototype.compare	Collator, Internationalization, JavaScript, Property, prototype
		The Intl.Collator.prototype.compare property returns a getter function that compares two strings according to the sort order of this Collator object.
251	Intl.Collator.prototype.resolvedOptions()	Collator, Internationalization, JavaScript, Method, prototype
		The Intl.Collator.prototype.resolvedOptions() method returns a new object with properties reflecting the locale and collation options computed during initialization of this Collator object.
252	Intl.Collator.supportedLocalesOf()	Collator, Internationalization, JavaScript, Method
		The Intl.Collator.supportedLocalesOf() method returns an array containing those of the provided locales that are supported in collation without having to fall back to the runtime's default locale.
253	Intl.DateTimeFormat	DateTimeFormat, Internationalization, JavaScript
		The Intl.DateTimeFormat object is a constructor for objects that enable language sensitive date and time formatting.
254	Intl.DateTimeFormat.prototype	DateTimeFormat, Internationalization, JavaScript, Property, prototype
		The Intl.DateTimeFormat.prototype property represents the prototype object for the Intl.DateTimeFormat constructor.
255	Intl.DateTimeFormat.prototype.format	DateTimeFormat, Internationalization, JavaScript, Property, prototype
		The Intl.DateTimeFormat.prototype.format property returns a getter function that formats a date according to the locale and formatting options of this DateTimeFormat object.
256	Intl.DateTimeFormat.prototype.resolvedOptions()	DateTimeFormat, Internationalization, JavaScript, Method, prototype
		The Intl.DateTimeFormat.prototype.resolvedOptions() method returns a new object with properties reflecting the locale and date and time formatting options computed during initialization of this DateTimeFormat object.
257	Intl.DateTimeFormat.supportedLocalesOf()	DateTimeFormat, Internationalization, JavaScript, Method, prototype
		The Intl.DateTimeFormat.supportedLocalesOf() method returns an array containing those of the provided locales that are supported in date and time formatting without having to fall back to the runtime's default locale.
258	Intl.NumberFormat	Internationalization, JavaScript, NumberFormat
		The Intl.NumberFormat object is a constructor for objects that enable language sensitive number formatting.
259	Intl.NumberFormat.prototype	Internationalization, JavaScript, NumberFormat, Property, prototype
		The Intl.NumberFormat.prototype property represents the prototype object for the Intl.NumberFormat constructor.
260	Intl.NumberFormat.prototype.format	Internationalization, JavaScript, NumberFormat, Property, prototype
		The Intl.NumberFormat.prototype.format property returns a getter function that formats a number according to the locale and formatting options of this NumberFormat object.
261	Intl.NumberFormat.prototype.resolvedOptions()	Internationalization, JavaScript, Method, NumberFormat, prototype
		The Intl.NumberFormat.prototype.resolvedOptions() method returns a new object with properties reflecting the locale and number formatting options computed during initialization of this NumberFormat object.
262	Intl.NumberFormat.supportedLocalesOf()	Internationalization, JavaScript, Method, NumberFormat
		The Intl.NumberFormat.supportedLocalesOf() method returns an array containing those of the provided locales that are supported in number formatting without having to fall back to the runtime's default locale.
263	Iterator	JavaScript, Legacy Iterator, Non-standard, Reference, Référence
		The Iterator function returns an object which implements legacy iterator protocol and iterates over enumerable properties of an object.
264	JSON	JSON, JavaScript, Object, Reference, Référence, polyfill
		The JSON object contains methods for parsing JavaScript Object Notation (JSON) and converting values to JSON. It can't be called or constructed, and aside from its two method properties it has no interesting functionality of its own.
265	JSON.parse()	ECMAScript5, JSON, JavaScript, Method, Reference, Référence
		The JSON.parse() method parses a string as JSON, optionally transforming the value produced by parsing.
266	JSON.stringify()	JSON, JavaScript, Method, Reference, Réference, Référence, stringify
		The JSON.stringify() method converts a JavaScript value to a JSON string, optionally replacing values if a replacer function is specified, or optionally including only the specified properties if a replacer array is specified.
267	Map	ECMAScript6, Experimental, Expérimental, JavaScript, Map
		The Map object is a simple key/value map. Any value (both objects and primitive values) may be used as either a key or a value.
268	Map.prototype	ECMAScript6, Experimental, Expérimental, JavaScript, Map, Property
		The Map.prototype property represents the prototype for the Map constructor.
269	Map.prototype.clear()	ECMAScript6, Experimental, Expérimental, JavaScript, Map, Method, prototype
		The clear() method removes all elements from a Map object.
270	Map.prototype.delete()	ECMAScript6, Experimental, Expérimental, JavaScript, Map, Method, prototype
		The delete() method removes the specified element from a Map object.
271	Map.prototype.entries()	ECMAScript6, Experimental, Expérimental, Iterator, JavaScript, Map, Method, prototype
		The entries() method returns a new Iterator object that contains the [key, value] pairs for each element in the Map object in insertion order.
272	Map.prototype.forEach()	ECMAScript6, Experimental, Expérimental, JavaScript, Map, Method, prototype
		The forEach() method executes a provided function once per each key/value pair in the Map object, in insertion order.
273	Map.prototype.get()	ECMAScript6, Experimental, Expérimental, JavaScript, Map, Method, prototype
		The get() method returns a specified element from a Map object.
274	Map.prototype.has()	ECMAScript6, Experimental, Expérimental, JavaScript, Map, Method, prototype
		The has() method returns a boolean indicating whether an element with the specified key exists or not.
275	Map.prototype.keys()	ECMAScript6, Experimental, Expérimental, Iterator, JavaScript, Map, Method, prototype
		The keys() method returns a new Iterator object that contains the keys for each element in the Map object in insertion order.
276	Map.prototype.set()	ECMAScript6, Experimental, Expérimental, JavaScript, Map, Method, prototype
		The set() method adds a new element with a specified key and value to a Map object.
277	Map.prototype.size	ECMAScript6, Experimental, Expérimental, JavaScript, Map, Property
		The size accessor property returns the number of elements in a Map object.
278	Map.prototype.values()	ECMAScript6, Experimental, Expérimental, Iterator, JavaScript, Map, Method, prototype
		The values() method returns a new Iterator object that contains the values for each element in the Map object in insertion order.
279	Map.prototype[@@iterator]()	ECMAScript6, Experimental, Expérimental, Iterator, JavaScript, Map, Method, Reference, Référence, prototype
		The initial value of the @@iterator property is the same function object as the initial value of the entries property.
280	Math	JavaScript, Math, Reference, Réference, Référence
		Math is a built-in object that has properties and methods for mathematical constants and functions. Not a function object.
281	Math.E	JavaScript, Math, Property, Reference, Référence
		The Math.E property represents the base of natural logarithms, e, approximately 2.718.
282	Math.LN10	JavaScript, Math, Property, Reference, Référence
		The Math.LN10 property represents the natural logarithm of 10, approximately 2.302:
283	Math.LN2	JavaScript, Math, Property, Reference, Référence
		The Math.LN2 property represents the natural logarithm of 2, approximately 0.693:
284	Math.LOG10E	JavaScript, Math, Property, Reference, Référence
		The Math.LOG10E property represents the base 10 logarithm of e, approximately 0.434:
285	Math.LOG2E	JavaScript, Math, Property, Reference, Référence
		The Math.LOG2E property represents the base 2 logarithm of e, approximately 1.442:
286	Math.PI	JavaScript, Math, Property, Reference, Référence
		The Math.PI property represents the ratio of the circumference of a circle to its diameter, approximately 3.14159:
287	Math.SQRT1_2	JavaScript, Math, Property, Reference, Référence
		The Math.SQRT1_2 property represents the square root of 1/2 which is approximately 0.707:
288	Math.SQRT2	JavaScript, Math, Property, Reference, Référence
		The Math.SQRT2 property represents the square root of 2, approximately 1.414:
289	Math.abs()	JavaScript, Math, Method, Reference, Référence
		The Math.abs() function returns the absolute value of a number, that is
290	Math.acos()	JavaScript, Math, Method, Reference, Référence
		The Math.acos() function returns the arccosine (in radians) of a number, that is
291	Math.acosh()	Experimental, Expérimental, JavaScript, Math, Method, Reference, Référence
		The Math.acosh() function returns the hyperbolic arccosine of a number, that is
292	Math.asin()	JavaScript, Math, Method, Reference, Référence
		The Math.asin() function returns the arcsine (in radians) of a number, that is
293	Math.asinh()	Experimental, Expérimental, JavaScript, Math, Method, Reference, Référence
		The Math.asinh() function returns the hyperbolic arcsine of a number, that is
294	Math.atan()	JavaScript, Math, Method, Reference, Référence
		The Math.atan() function returns the arctangent (in radians) of a number, that is
295	Math.atan2()	JavaScript, Math, Method, Reference, Référence
		The Math.atan2() function returns the arctangent of the quotient of its arguments.
296	Math.atanh()	Experimental, Expérimental, JavaScript, Math, Method, Reference, Référence
		The Math.atanh() function returns the hyperbolic arctangent of a number, that is
297	Math.cbrt()	Experimental, Expérimental, JavaScript, Math, Method, Reference, Référence
		The Math.cbrt() function returns the cube root of a number, that is
298	Math.ceil()	JavaScript, Math, Method, Reference, Référence
		The Math.ceil() function returns the smallest integer greater than or equal to a given number.
299	Math.clz32()	ECMAScript6, Experimental, Expérimental, JavaScript, Math, Method, Reference, Référence
		The Math.clz32() function returns the number of leading zero bits in the 32-bit binary representation of a number.
300	Math.cos()	JavaScript, Math, Method, Reference, Référence
		The Math.cos() function returns the cosine of a number.
301	Math.cosh()	Experimental, Expérimental, JavaScript, Math, Method, Reference, Référence
		The Math.cosh() function returns the hyperbolic cosine of a number, that can be expressed using the constant e:
302	Math.exp()	JavaScript, Math, Method, Reference, Référence
		The Math.exp() function returns ex, where x is the argument, and e is Euler's constant, the base of the natural logarithms.
303	Math.expm1()	Experimental, Expérimental, JavaScript, Math, Method, Reference, Référence
		The Math.expm1() function returns ex - 1, where x is the argument, and e the base of the natural logarithms.
304	Math.floor()	JavaScript, Math, Method, Reference, Référence
		The Math.floor() function returns the largest integer less than or equal to a given number.
305	Math.fround()	Experimental, Expérimental, JavaScript, Math, Method, Reference, Réference, Référence
		The Math.fround() function returns the nearest single precision float representation of a number.
306	Math.hypot()	Experimental, Expérimental, JavaScript, Math, Method, Reference, Référence
		The Math.hypot() function returns the square root of the sum of squares of its arguments, that is
307	Math.imul()	Experimental, Expérimental, JavaScript, Math, Method, Reference, Référence
		The Math.imul() function returns the result of the C-like 32-bit multiplication of the two parameters.
308	Math.log()	JavaScript, Math, Method, Reference, Référence
		The Math.log() function returns the natural logarithm (base e) of a number, that is
309	Math.log10()	ECMAScript6, Experimental, Expérimental, JavaScript, Math, Method, Reference, Référence
		The Math.log10() function returns the base 10 logarithm of a number, that is
310	Math.log1p()	ECMAScript6, Experimental, Expérimental, JavaScript, Math, Method, Reference, Référence
		The Math.log1p() function returns the natural logarithm (base e) of 1 + a number, that is
311	Math.log2()	ECMAScript6, Experimental, Expérimental, JavaScript, Math, Method, Reference, Référence
		The Math.log2() function returns the base 2 logarithm of a number, that is
312	Math.max()	JavaScript, Math, Method, Reference, Réference, Référence
		The Math.max() function returns the largest of zero or more numbers.
313	Math.min()	JavaScript, Math, Method, Reference, Référence
		The Math.min() function returns the smallest of zero or more numbers.
314	Math.pow()	JavaScript, Math, Method, Reference, Réference, Référence
		The Math.pow() function returns the base to the exponent power, that is, baseexponent.
315	Math.random()	JavaScript, Math, Method, Reference, Réference, Référence
		The Math.random() function returns a floating-point, pseudo-random number in the range [0, 1) that is, from 0 (inclusive) up to but not including 1 (exclusive), which you can then scale to your desired range. The implementation selects the initial seed to the random number generation algorithm; it cannot be chosen or reset by the user.
316	Math.round()	JavaScript, Math, Method, Reference, Référence
		The Math.round() function returns the value of a number rounded to the nearest integer.
317	Math.sign()	Experimental, Expérimental, JavaScript, Math, Method, Reference, Référence
		The Math.sign() function returns the sign of a number, indicating whether the number is positive, negative or zero.
318	Math.sin()	JavaScript, Math, Method, Reference, Référence
		The Math.sin() function returns the sine of a number.
319	Math.sinh()	ECMAScript6, Experimental, Expérimental, JavaScript, Math, Method, Reference, Référence
		The Math.sinh() function returns the hyperbolic sine of a number, that can be expressed using the constant e:
320	Math.sqrt()	JavaScript, Math, Method, Reference, Référence
		The Math.sqrt() function returns the square root of a number, that is
321	Math.tan()	JavaScript, Math, Method, Reference, Référence
		The Math.tan() function returns the tangent of a number.
322	Math.tanh()	ECMAScript6, Experimental, Expérimental, JavaScript, Math, Method, Reference, Référence
		The Math.tanh() function returns the hyperbolic tangent of a number, that is
323	Math.trunc()	ECMAScript6, Experimental, Expérimental, JavaScript, Math, Method, Reference, Référence
		The Math.trunc() function returns the integral part of a number by removing any fractional digits.
324	NaN	JavaScript
		The global NaN property is a value representing Not-A-Number.
325	Number	JavaScript, Number, Reference, Réference, Référence
		The Number JavaScript object is a wrapper object allowing you to work with numerical values. A Number object is created using the Number() constructor.
326	Number.EPSILON	ECMAScript6, Experimental, Expérimental, JavaScript, Number, Property
		The Number.EPSILON property represents the difference between one and the smallest value greater than one that can be represented as a Number.
327	Number.MAX_SAFE_INTEGER	ECMAScript6, Experimental, Expérimental, JavaScript, Number, Property
		The Number.MAX_SAFE_INTEGER constant represents the maximum safe integer in JavaScript (253 - 1).
328	Number.MAX_VALUE	JavaScript, Number, Property
		The Number.MAX_VALUE property represents the maximum numeric value representable in JavaScript.
329	Number.MIN_SAFE_INTEGER	ECMAScript6, Experimental, Expérimental, JavaScript, Number, Property
		The Number.MIN_SAFE_INTEGER constant represents the minimum safe integer in JavaScript (-(253 - 1)).
330	Number.MIN_VALUE	JavaScript, Number, Property
		The Number.MIN_VALUE property represents the smallest positive numeric value representable in JavaScript.
331	Number.NEGATIVE_INFINITY	JavaScript, Number, Property
		The Number.NEGATIVE_INFINITY property represents the negative Infinity value.
332	Number.NaN	JavaScript, Number, Property
		The Number.NaN property represents Not-A-Number. Equivalent of NaN.
333	Number.POSITIVE_INFINITY	JavaScript, Number, Property
		The Number.POSITIVE_INFINITY property represents the positive Infinity value.
334	Number.isFinite()	Experimental, Expérimental, JavaScript, Method, Number, Reference, Référence
		The Number.isFinite() method determines whether the passed value is a finite number.
335	Number.isInteger()	Experimental, Expérimental, JavaScript, Method, Number, Reference, Référence
		The Number.isInteger() method determines whether the passed value is an integer.
336	Number.isNaN()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Number
		The Number.isNaN() method determines whether the passed value is NaN. More robust version of the original global isNaN().
337	Number.isSafeInteger()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Number
		The Number.isSafeInteger() method determines whether the provided value is a number that is a safe integer. A safe integer is an integer that
338	Number.parseFloat()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Number
		The Number.parseFloat() method parses a string argument and returns a floating point number. This method behaves identically to the global function parseFloat() and is part of ECMAScript 6 (its purpose is modularization of globals).
339	Number.parseInt()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Number
		The Number.parseInt() method parses a string argument and returns an integer of the specified radix or base.
340	Number.prototype	JavaScript, Number, Property, prototype
		The Number.prototype property represents the prototype for the Number constructor.
341	Number.prototype.toExponential()	JavaScript, Method, Number, prototype
		The toExponential() method returns a string representing the Number object in exponential notation
342	Number.prototype.toFixed()	JavaScript, Method, Number, prototype
		The toFixed() method formats a number using fixed-point notation.
343	Number.prototype.toLocaleString()	Internationalization, JavaScript, Method, Number, prototype
		The toLocaleString() method returns a string with a language sensitive representation of this number.
344	Number.prototype.toPrecision()	JavaScript, Method, Number, prototype
		The toPrecision() method returns a string representing the Number object to the specified precision.
345	Number.prototype.toSource()	JavaScript, Method, Non-standard, Number, prototype
		The toSource() method returns a string representing the source code of the object.
346	Number.prototype.toString()	JavaScript, Method, Number, prototype
		The toString() method returns a string representing the specified Number object.
347	Number.prototype.valueOf()	JavaScript, Method, Number, prototype
		The valueOf() method returns the wrapped primitive value of a Number object.
348	Number.toInteger()	JavaScript, Method, Non-standard, Number, Obsolete
		The Number.toInteger() method used to evaluate the passed value and convert it to an integer, but its implementation has been removed.
349	Object	Constructor, JavaScript, Object
		The Object constructor creates an object wrapper.
350	Object.assign()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Object, Reference, Réference, Référence, polyfill
		The Object.assign() method is used to copy the values of all enumerable own properties from one or more source objects to a target object. It will return the target object.
351	Object.create()	ECMAScript5, JavaScript, Method, Object, Reference, Réference, Référence, polyfill
		The Object.create() method creates a new object with the specified prototype object and properties.
352	Object.defineProperties()	ECMAScript5, JavaScript, JavaScript 1.8.5, Method, Object
		The Object.defineProperties() method defines new or modifies existing properties directly on an object, returning the object.
353	Object.defineProperty()	ECMAScript5, JavaScript, JavaScript 1.8.5, Method, Object
		The Object.defineProperty() method defines a new property directly on an object, or modifies an existing property on an object, and returns the object.
354	Additional examples for Object.defineProperty	Examples, JavaScript, Object
		This page provides additional examples for Object.defineProperty().
355	Object.freeze()	ECMAScript5, JavaScript, JavaScript 1.8.5, Method, Object
		The Object.freeze() method freezes an object: that is, prevents new properties from being added to it; prevents existing properties from being removed; and prevents existing properties, or their enumerability, configurability, or writability, from being changed. In essence the object is made effectively immutable. The method returns the object being frozen.
356	Object.getOwnPropertyDescriptor()	ECMAScript5, JavaScript, Method, Object
		The Object.getOwnPropertyDescriptor() method returns a property descriptor for an own property (that is, one directly present on an object, not present by dint of being along an object's prototype chain) of a given object.
357	Object.getOwnPropertyNames()	ECMAScript5, JavaScript, JavaScript 1.8.5, Method, Object, Reference, Référence
		The Object.getOwnPropertyNames() method returns an array of all properties (enumerable or not) found directly upon a given object.
358	Object.getOwnPropertySymbols()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Object
		The Object.getOwnPropertySymbols() method returns an array of all symbol properties found directly upon a given object.
359	Object.getPrototypeOf()	ECMAScript5, JavaScript, Method, Object
		The Object.getPrototypeOf() method returns the prototype (i.e. the value of the internal [[Prototype]] property) of the specified object.
360	Object.is()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Object
		The Object.is() method determines whether two values are the same value.
361	Object.isExtensible()	ECMAScript5, JavaScript, JavaScript 1.8.5, Method, Object
		The Object.isExtensible() method determines if an object is extensible (whether it can have new properties added to it).
362	Object.isFrozen()	ECMAScript5, JavaScript, JavaScript 1.8.5, Method, Object
		The Object.isFrozen() determines if an object is frozen.
363	Object.isSealed()	ECMAScript5, JavaScript, JavaScript 1.8.5, Method, Object
		The Object.isSealed() method determines if an object is sealed.
364	Object.keys()	ECMAScript5, JavaScript, JavaScript 1.8.5, Method, Object
		The Object.keys() method returns an array of a given object's own enumerable properties, in the same order as that provided by a for...in loop (the difference being that a for-in loop enumerates properties in the prototype chain as well).
365	Object.observe()	ECMAScript7, Experimental, Expérimental, JavaScript, Method, Object
		The Object.observe() method is used for asynchronously observing the changes to an object. It provides a stream of changes in the order in which they occur.
366	Object.preventExtensions()	ECMAScript5, JavaScript, JavaScript 1.8.5, Method, Object
		The Object.preventExtensions() method prevents new properties from ever being added to an object (i.e. prevents future extensions to the object).
367	Object.prototype	JavaScript, Object, Property
		The Object.prototype property represents the Object prototype object.
368	Object.prototype.__count__	JavaScript, Object, Obsolete, Property, prototype
		The __count__ property used to store the count of enumerable properties on the object, but it has been removed.
369	Object.prototype.__defineGetter__()	JavaScript, Method, Non-standard, Object, prototype
		The __defineGetter__ method binds an object's property to a function to be called when that property is looked up.
370	Object.prototype.__defineSetter__()	JavaScript, Method, Non-standard, Object, prototype
		The __defineSetter__ method binds an object's property to a function to be called when an attempt is made to set that property.
371	Object.prototype.__lookupGetter__()	Deprecated, JavaScript, Method, Non-standard, Object, prototype
		The __lookupGetter__ method returns the function bound as a getter to the specified property.
372	Object.prototype.__lookupSetter__()	Deprecated, JavaScript, Method, Non-standard, Object, prototype
		The __lookupSetter__ method returns the function bound as a setter to the specified property.
373	Object.prototype.__noSuchMethod__	JavaScript, Object, Obsolete, Property, prototype
		The __noSuchMethod__ property references a function to be executed when a non-existent method is called on an object.
374	Object.prototype.__parent__	JavaScript, Object, Obsolete, Property, prototype
		The __parent__ property used to point to an object's context, but it has been removed.
375	Object.prototype.__proto__	JavaScript, Object, Property, Reference, Réference, Référence, prototype
		The __proto__ property of Object.prototype is an accessor property (a getter function and a setter function) that exposes the internal [[Prototype]] (either an object or null) of the object through which it is accessed.
376	Object.prototype.constructor	JavaScript, Object, Property, prototype
		Returns a reference to the Object function that created the instance's prototype. Note that the value of this property is a reference to the function itself, not a string containing the function's name. The value is only read-only for primitive values such as 1, true and "test".
377	Object.prototype.eval()	JavaScript, Method, Object, Obsolete
		The Object.eval() method used to evaluate a string of JavaScript code in the context of an object, however, this method has been removed.
378	Object.prototype.hasOwnProperty()	JavaScript, Method, Object, prototype
		The hasOwnProperty() method returns a boolean indicating whether the object has the specified property.
379	Object.prototype.isPrototypeOf()	JavaScript, Method, Object, prototype
		The isPrototypeOf() method tests for an object in another object's prototype chain.
380	Object.prototype.propertyIsEnumerable()	JavaScript, Method, Object, prototype
		The propertyIsEnumerable() method returns a Boolean indicating whether the specified property is enumerable.
381	Object.prototype.toLocaleString()	JavaScript, Method, Object, prototype
		The toLocaleString() method returns a string representing the object. This method is meant to be overriden by derived objects for locale-specific purposes.
382	Object.prototype.toSource()	JavaScript, Method, Non-standard, Object, prototype
		The toSource() method returns a string representing the source code of the object.
383	Object.prototype.toString()	JavaScript, Method, Object, prototype
		The toString() method returns a string representing object.
384	Object.prototype.unwatch()	JavaScript, Method, Non-standard, Object, Reference, Référence, prototype
		The unwatch() method removes a watchpoint set with the watch() method.
385	Object.prototype.valueOf()	JavaScript, Method, Object, prototype
		The valueOf() method returns the primitive value of the specified object.
386	Object.prototype.watch()	JavaScript, Method, Non-standard, Object, prototype
		The watch() method watches for a property to be assigned a value and runs a function when that occurs.
387	Object.seal()	ECMAScript5, JavaScript, JavaScript 1.8.5, Method, Object
		The Object.seal() method seals an object, preventing new properties from being added to it and marking all existing properties as non-configurable. Values of present properties can still be changed as long as they are writable.
388	Object.setPrototypeOf()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Object
		The Object.setPrototypeOf() method sets the prototype (i.e., the internal [[Prototype]] property) of a specified object to another object or null.
389	ParallelArray	JavaScript, Obsolete, ParallelArray
		The goal of ParallelArray was to enable data-parallelism in web applications. The higher-order functions available on ParallelArray attempted to execute in parallel, though they may fall back to sequential execution if necessary. To ensure that your code executes in parallel, it is suggested that the functions should be limited to the parallelizable subset of JS that Firefox supports.
390	Promise	ECMAScript6, Experimental, Expérimental, JavaScript, Promise
		The Promise object is used for deferred and asynchronous computations. A Promise is in one of these states:
391	Promise.all()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Promise
		The Promise.all(iterable) method returns a promise that resolves when all of the promises in the iterable argument have resolved.
392	Promise.prototype	Experimental, Expérimental, JavaScript, Promise, Property
		The Promise.prototype property represents the prototype for the Promise constructor.
393	Promise.prototype.catch()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Promise, prototype
		The catch() method returns a Promise and deals with rejected cases only. It behaves the same as calling Promise.prototype.then(undefined, onRejected).
394	Promise.prototype.then()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Promise, prototype
		The then() method returns a Promise. It takes two arguments, both are callback functions for the success and failure cases of the Promise.
395	Promise.race()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Promise
		The Promise.race(iterable) method returns a promise that resolves or rejects as soon as one of the promises in the iterable resolves or rejects, with the value or reason from that promise.
396	Promise.reject()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Promise
		The Promise.reject(reason) method returns a Promise object that is rejected with the given reason.
397	Promise.resolve()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Promise
		The Promise.resolve(value) method returns a Promise object that is resolved with the given value. If the value is a thenable (i.e. has a then method), the returned promise will "follow" that thenable, adopting its eventual state; otherwise the returned promise will be fulfilled with the value.
398	Proxy	ECMAScript6, Experimental, Expérimental, JavaScript, Proxy
		The Proxy object is used to define custom behavior for fundamental operations (e.g. property lookup, assignment, enumeration, function invocation, etc).
399	Proxy handler	ECMAScript6, Experimental, Expérimental, JavaScript, Proxy
		The proxy's handler object is a placeholder object which contains traps for proxies.
400	handler.apply()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Proxy
		The handler.apply() method is a trap for a function call.
401	handler.construct()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Proxy
		The handler.construct() method is a trap for the new operator.
402	handler.defineProperty()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Proxy
		The handler.defineProperty() method is a trap for Object.defineProperty().
403	handler.deleteProperty()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Proxy
		The handler.deleteProperty() method is a trap for the delete operator.
404	handler.enumerate()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Proxy
		The handler.enumerate() method is a trap for for...in statements.
405	handler.get()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Proxy
		The handler.get() method is a trap for getting a property value.
406	handler.getOwnPropertyDescriptor()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Proxy
		The handler.getOwnPropertyDescriptor() method is a trap for Object.getOwnPropertyDescriptor().
407	handler.getPrototypeOf()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Proxy
		The handler.getPrototypeOf() method is a trap for the [[GetPrototypeOf]] internal method.
408	handler.has()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Proxy
		The handler.has() method is a trap for the in operator.
409	handler.isExtensible()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Proxy
		The handler.isExtensible() method is a trap for Object.isExtensible().
410	handler.ownKeys()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Proxy
		The handler.ownKeys() method is a trap for Object.getOwnPropertyNames().
411	handler.preventExtensions()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Proxy
		The handler.preventExtensions() method is a trap for Object.preventExtensions().
412	handler.set()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Proxy
		The handler.set() method is a trap for setting a property value.
413	handler.setPrototypeOf()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, NeedsExample, Proxy
		The handler.setPrototypeOf() method is a trap for Object.setPrototypeOf().
414	Proxy.revocable()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Proxy
		The Proxy.revocable() method is used to create a revocable Proxy object.
415	RangeError	Error, JavaScript, Object, RangeError
		The RangeError object indicates an error when a value is not in the set or range of allowed values.
416	RangeError.prototype	Error, JavaScript, Property, RangeError, prototype
		The RangeError.prototype property represents the prototype the RangeError constructor.
417	ReferenceError	Error, JavaScript, Object, Reference, ReferenceError, Référence
		The ReferenceError object represents an error when a non-existent variable is referenced.
418	ReferenceError.prototype	Error, JavaScript, Property, ReferenceError, prototype
		The ReferenceError.prototype property represents the prototype for the ReferenceError constructor.
419	Reflect	ECMAScript6, Experimental, Expérimental, JavaScript, Reflect
		Reflect is a built-in object that provides methods for interceptable JavaScript operations. The methods are the same as those of the proxy handlers. Reflect It is not a function object.
420	RegExp	Constructor, JavaScript, Reference, RegExp, Regular Expressions, Réference, Référence
		The RegExp constructor creates a regular expression object for matching text with a pattern.
421	RegExp.$1-$9	JavaScript, Non-standard, Property, Read-only, Reference, RegExp, Regular Expressions, Référence
		The non-standard $1, $2, $3, $4, $5, $6, $7, $8, $9 properties are static and read-only properties of regular expressions that contain parenthesized substring matches.
422	RegExp.input ($_)	JavaScript, Non-standard, Property, Reference, RegExp, Regular Expressions, Référence
		The non-standard input property is a static property of regular expressions that contains the string against which a regular expression is matched. RegExp.$_ is an alias for this property.
423	RegExp.lastIndex	JavaScript, Property, Reference, RegExp, Regular Expressions, Référence
		The lastIndex is a read/write integer property of regular expressions that specifies the index at which to start the next match.
424	RegExp.lastMatch ($&)	JavaScript, Non-standard, Property, Read-only, Reference, RegExp, Regular Expressions, Référence
		The non-standard lastMatch property is a static and read-only property of regular expressions that contains the last matched characters. RegExp.$& is an alias for this property.
425	RegExp.lastParen ($+)	JavaScript, Non-standard, Property, Read-only, Reference, RegExp, Regular Expressions, Référence
		The non-standard lastParen property is a static and read-only property of regular expressions that contains the last parenthesized substring match, if any. RegExp.$+ is an alias for this property.
426	RegExp.leftContext ($`)	JavaScript, Non-standard, Property, Read-only, Reference, RegExp, Regular Expressions, Référence
		The non-standard leftContext property is a static and read-only property of regular expressions that contains the substring preceding the most recent match. RegExp.$` is an alias for this property.
427	RegExp.prototype	JavaScript, Property, Reference, RegExp, Référence, prototype
		The RegExp.prototype property represents the prototype object for the RegExp constructor.
428	RegExp.prototype.compile()	Deprecated, JavaScript, Method, Reference, RegExp, Regular Expressions, Référence, prototype
		The deprecated compile() method is used to (re-)compile a regular expression during execution of a script. It is basically the same as the RegExp constructor.
429	RegExp.prototype.exec()	JavaScript, Method, Reference, RegExp, Regular Expressions, Référence, prototype
		The exec() method executes a search for a match in a specified string. Returns a result array, or null.
430	RegExp.prototype.flags	ECMAScript6, Experimental, Expérimental, JavaScript, Property, Reference, RegExp, Regular Expressions, Référence, prototype
		The flags property returns a string consisting of the flags of the current regular expression object.
431	RegExp.prototype.global	JavaScript, Property, Reference, RegExp, Regular Expressions, Référence, prototype
		The global property indicates whether or not the "g" flag is used with the regular expression. global is a read-only property of an individual regular expression instance.
432	RegExp.prototype.ignoreCase	JavaScript, Property, Reference, RegExp, Regular Expressions, Référence, prototype
		The ignoreCase property indicates whether or not the "i" flag is used with the regular expression. ignoreCase is a read-only property of an individual regular expression instance.
433	RegExp.prototype.multiline	JavaScript, Property, Reference, RegExp, Regular Expressions, Référence, prototype
		The multiline property indicates whether or not the "m" flag is used with the regular expression. multiline is a read-only property of an individual regular expression instance.
434	RegExp.prototype.source	JavaScript, Property, Reference, RegExp, Regular Expressions, Réference, Référence, prototype
		The source property returns a String containing the source text of the regexp object, and it doesn't contain the two forward slashes on both sides and any flags.
435	RegExp.prototype.sticky	ECMAScript6, Experimental, Expérimental, JavaScript, Property, Reference, RegExp, Regular Expressions, Référence, prototype
		The sticky property reflects whether or not the search is sticky (searches in strings only from the index indicated by the lastIndex property of this regular expression). sticky is a read-only property of an individual regular expression object.
436	RegExp.prototype.test()	JavaScript, Method, Reference, RegExp, Regular Expressions, Référence, prototype
		The test() method executes a search for a match between a regular expression and a specified string. Returns true or false.
437	RegExp.prototype.toSource()	JavaScript, Method, Non-standard, Reference, RegExp, Regular Expressions, Réference, Référence, prototype
		The toSource() method returns a string representing the source code of the object.
438	RegExp.prototype.toString()	JavaScript, Method, Reference, RegExp, Regular Expressions, Réference, Référence, prototype
		The toString() method returns a string representing the regular expression.
439	RegExp.prototype.unicode	ECMAScript6, Experimental, Expérimental, JavaScript, Property, Reference, RegExp, Regular Expressions, Référence, prototype
		The unicode property indicates whether or not the "u" flag is used with the regular expression. unicode is a read-only property of an individual regular expression instance.
440	RegExp.rightContext ($')	JavaScript, Non-standard, Property, Read-only, Reference, RegExp, Regular Expressions, Référence
		The non-standard rightContext property is a static and read-only property of regular expressions that contains the substring following the most recent match. RegExp.$' is an alias for this property.
441	SIMD	Experimental, Expérimental, JavaScript, SIMD
		SIMD (pronounced "seem-dee") is short for Single Instruction/Multiple Data which is one classification of computer architectures . SIMD allows one same operation to be performed on multiple data points resulting in data level parallelism and thus performance gains, for example for 3D graphics and video processing, physics simulations or cryptography, and other domains.
442	SIMD.%type%.abs()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.abs() method returns a new SIMD data type with absolute values.
443	SIMD.%type%.add()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.add() method returns a new instance with the lane values added (a + b).
444	SIMD.%type%.and()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.and() method returns a new instance with the logical AND of the lane values (a & b).
445	SIMD.%type%.bool()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.bool() method creates a new integer SIMD data type with -1 as a lane value where the Boolean parameter is true and 0x0 where the Boolean parameter is false. This allows you to create an explicit selection mask, for example.
446	SIMD.%type%.check()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.check() method returns a SIMD data type if the parameter is a valid SIMD data type and the same as %type%. Otherwise, a TypeError is thrown.
447	SIMD.%type%.clamp()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.clamp() method returns a new instance with values clamped between lowerLimit and upperLimit. Clamping limits values to a range and returns the nearest value from that range, even if the value itself is not in the range.
448	SIMD.%type%.div()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.div() method returns a new instance with the lane values divided (a / b).
449	SIMD.%type%.equal()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.equal() method returns a selection mask with values depending on an equality comparison (a == b) in each lane.
450	SIMD.%type%.greaterThan()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.greaterThan() method returns a selection mask with values depending on a greater-than comparison (a > b) in each lane.
451	SIMD.%type%.greaterThanOrEqual()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.greaterThanOrEqual() method returns a selection mask with values depending on a greater-than-or-equal comparison (a >= b) in each lane.
452	SIMD.%type%.lessThan()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.lessThan() method returns a selection mask with values depending on a less-than comparison (a < b) in each lane.
453	SIMD.%type%.lessThanOrEqual()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.lessThanOrEqual() method returns a selection mask with values depending on a less-than-or-equal comparison (a <= b) in each lane.
454	SIMD.%type%.max()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.max() method returns a new instance with the maximum lane values of two SIMD types (Math.max(a, b)).
455	SIMD.%type%.maxNum()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.maxNum() method returns a new instance with the maximum lane values of two SIMD types (Math.max(a, b)) preferring numbers over NaN.
456	SIMD.%type%.min()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.min() method returns a new instance with the minimum lane values of two SIMD types (Math.min(a, b)).
457	SIMD.%type%.minNum()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.minNum() method returns a new instance with the minimum lane values of two SIMD types (Math.min(a, b)) preferring numbers over NaN.
458	SIMD.%type%.mul()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.mul() method returns a new instance with the lane values multiplied (a * b).
459	SIMD.%type%.neg()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.mul() method returns a new instance with the lane values negated.
460	SIMD.%type%.not()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.not() method returns a new instance with the bitwise logical NOT of the lane values (~a).
461	SIMD.%type%.notEqual()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.notEqual() method returns a selection mask with values depending on an inequality comparison (a != b) in each lane.
462	SIMD.%type%.or()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.or() method returns a new instance with the logical OR of the lane values (a | b).
463	SIMD.%type%.reciprocalApproximation()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.reciprocalApproximation() method returns a new instance with an approximation of the reciprocal lane values (1 / x).
464	SIMD.%type%.reciprocalSqrtApproximation()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.reciprocalSqrtApproximation() method returns a new instance with an approximation of the reciprocal value (1 / x) of the square root (Math.sqrt()) of the lane values.
465	SIMD.%type%.select()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.select() method creates a new integer SIMD data type with the lane values being a selection match from a selector mask.
466	SIMD.%type%.shiftLeftByScalar()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.shiftLeftByScalar() method returns a new instance with the lane values shifted left by a given bit count (a << bits).
467	SIMD.%type%.shiftRightArithmeticByScalar()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.shiftRightArithmeticByScalar() method returns a new instance with the lane values shifted right (arithmetic) by a given bit count (a >> bits).
468	SIMD.%type%.shiftRightLogicalByScalar()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.shiftRightLogicalByScalar() method returns a new instance with the lane values shifted right (logical) by a given bit count (a >>> bits).
469	SIMD.%type%.shuffle()	Experimental, Expérimental, JavaScript, Method, SIMD
		The static SIMD.%type%.shuffle() method creates a new SIMD data type instance with the lane values shuffled.
470	SIMD.%type%.splat()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.splat() method creates a new SIMD data type with all lanes set to a given value.
471	SIMD.%type%.sqrt()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.sqrt() method returns a new instance with the square root of the lane values (see also Math.sqrt() for the same scalar function).
472	SIMD.%type%.sub()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.sub() method returns a new instance with the lane values subtracted (a - b).
473	SIMD.%type%.swizzle()	Experimental, Expérimental, JavaScript, Method, SIMD
		The static SIMD.%type%.swizzle() method creates a new SIMD data type instance with the lane values swizzled (re-ordered).
474	SIMD.%type%.xor()	Experimental, Expérimental, JavaScript, Method, SIMD
		The SIMD.%type%.xor() method returns a new instance with the logical XOR of the lane values (a ^ b).
475	SIMD.float32x4	Experimental, Expérimental, JavaScript, SIMD
		The SIMD.float32x4 data type is a 128-bit vector divided into 4 lanes storing single precision floating point values.
476	SIMD.float64x2	Experimental, Expérimental, JavaScript, SIMD
		The SIMD.float64x2 data type is a 128-bit vector divided into 2 lanes storing double precision floating point values.
477	SIMD.int16x8	Experimental, Expérimental, JavaScript, SIMD
		The SIMD.int16x8 data type is a 128-bit vector divided into 8 lanes storing 16-bit signed integer values.
478	SIMD.int32x4	Experimental, Expérimental, JavaScript, SIMD
		The SIMD.int32x4 data type is a 128-bit vector divided into 4 lanes storing 32-bit signed integer values.
479	SIMD.int8x16	Experimental, Expérimental, JavaScript, SIMD
		The SIMD.int8x16 data type is a 128-bit vector divided into 16 lanes storing 8-bit signed integer values.
480	Set	ECMAScript6, Experimental, Expérimental, JavaScript, set
		The Set object lets you store unique values of any type, whether primitive values or object references.
481	Set.prototype	ECMAScript6, Experimental, Expérimental, JavaScript, Property, set
		The Set.prototype property represents the prototype for the Set constructor.
482	Set.prototype.add()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, prototype, set
		The add() method appends a new element with a specified value to the end of a Set object.
483	Set.prototype.clear()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, prototype, set
		The clear() method removes all elements from a Set object.
484	Set.prototype.delete()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, prototype, set
		The delete() method removes the specified element from a Set object.
485	Set.prototype.entries()	ECMAScript6, Experimental, Expérimental, Iterator, JavaScript, Method, prototype, set
		The entries() method returns a new Iterator object that contains an array of [value, value] for each element in the Set object, in insertion order. For Set objects there is no key like in Map objects. However, to keep the API similar to the Map object, each entry has the same value for its key and value here, so that an array [value, value] is returned.
486	Set.prototype.forEach()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, prototype, set
		The forEach() method executes a provided function once per each value in the Set object, in insertion order.
487	Set.prototype.has()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, prototype, set
		The has() method returns a boolean indicating whether an element with the specified value exists in a Set object or not.
488	Set.prototype.size	ECMAScript6, Experimental, Expérimental, JavaScript, Property, prototype, set
		The size accessor property returns the number of elements in a Set object.
489	Set.prototype.values()	ECMAScript6, Experimental, Expérimental, Iterator, JavaScript, Method, prototype, set
		The values() method returns a new Iterator object that contains the values for each element in the Set object in insertion order.
490	Set.prototype[@@iterator]()	ECMAScript6, Experimental, Expérimental, Iterator, JavaScript, Method, Reference, Référence, prototype, set
		The initial value of the @@iterator property is the same function object as the initial value of the values property.
491	StopIteration	JavaScript, Legacy Iterator, Non-standard, Reference, Référence, StopIteration
		The StopIteration object is used to tell the end of the iteration in the legacy iterator protocol.
492	String	JavaScript, Reference, Réference, Référence, String
		The String global object is a constructor for strings, or a sequence of characters.
493	String.fromCharCode()	JavaScript, Method, Reference, Référence, String, Unicode
		The static String.fromCharCode() method returns a string created by using the specified sequence of Unicode values.
494	String.fromCodePoint()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Reference, Référence, String
		The static String.fromCodePoint() method returns a string created by using the specified sequence of code points.
495	String.length	JavaScript, Property, Reference, Réference, Référence, String, prototype
		The length property represents the length of a string.
496	String.prototype	JavaScript, Property, Reference, Réference, Référence, String, prototype
		The String.prototype property represents the String prototype object.
497	String.prototype.anchor()	HTML wrapper methods, JavaScript, Method, Reference, Référence, String, prototype
		The anchor() method creates an <a> HTML anchor element that is used as a hypertext target.
498	String.prototype.big()	Deprecated, HTML wrapper methods, JavaScript, Method, Reference, Référence, String, prototype
		The big() method creates a <big> HTML element that causes a string to be displayed in a big font.
499	String.prototype.blink()	Deprecated, HTML wrapper methods, JavaScript, Method, Reference, Réference, Référence, String, prototype
		The blink() method creates a <blink> HTML element that causes a string to blink.
500	String.prototype.bold()	Deprecated, HTML wrapper methods, JavaScript, Method, Reference, Réference, Référence, String, prototype
		The bold() method creates a <b> HTML element that causes a string to be displayed as bold.
501	String.prototype.charAt()	JavaScript, Method, Reference, Référence, String, prototype
		The charAt() method returns the specified character from a string.
502	String.prototype.charCodeAt()	JavaScript, Method, Reference, Référence, String, Unicode
		The charCodeAt() method returns the numeric Unicode value of the character at the given index (except for unicode codepoints > 0x10000).
503	String.prototype.codePointAt()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Reference, Référence, String, prototype
		The codePointAt() method returns a non-negative integer that is the UTF-16 encoded code point value.
504	String.prototype.concat()	JavaScript, Method, Reference, Référence, String, prototype
		The concat() method combines the text of two or more strings and returns a new string.
505	String.prototype.endsWith()	Experimental, Expérimental, JavaScript, Method, Reference, Réference, Référence, String, prototype
		The endsWith() method determines whether a string ends with the characters of another string, returning true or false as appropriate.
506	String.prototype.fixed()	Deprecated, HTML wrapper methods, JavaScript, Method, Reference, Référence, String, prototype
		The fixed() method creates a <tt> HTML element that causes a string to be displayed in fixed-pitch font.
507	String.prototype.fontcolor()	Deprecated, HTML wrapper methods, JavaScript, Method, Reference, Référence, String, prototype
		The fontcolor() method creates a <font> HTML element that causes a string to be displayed in the specified font color.
508	String.prototype.fontsize()	Deprecated, HTML wrapper methods, JavaScript, Method, Reference, Référence, String, prototype
		The fontsize() method creates a <font> HTML element that causes a string to be displayed in the specified font size.
509	String.prototype.includes()	Experimental, Expérimental, JavaScript, Method, Reference, Réference, Référence, String, prototype
		The includes() method determines whether one string may be found within another string, returning true or false as appropriate.
510	String.prototype.indexOf()	JavaScript, Method, Reference, Référence, String, prototype
		The indexOf() method returns the index within the calling String object of the first occurrence of the specified value, starting the search at fromIndex. Returns -1 if the value is not found.
511	String.prototype.italics()	Deprecated, HTML wrapper methods, JavaScript, Method, String, prototype
		The italics() method creates an <i> HTML element that causes a string to be italic.
512	String.prototype.lastIndexOf()	JavaScript, Method, Reference, Référence, String, prototype
		The lastIndexOf() method returns the index within the calling String object of the last occurrence of the specified value, or -1 if not found. The calling string is searched backward, starting at fromIndex.
513	String.prototype.link()	HTML wrapper methods, JavaScript, Method, Reference, Réference, Référence, String, prototype
		The link() method creates an <a> HTML element that causes a string to be displayed as a hypertext link to another URL.
514	String.prototype.localeCompare()	Internationalization, JavaScript, Method, Reference, Référence, String, prototype
		The localeCompare() method returns a number indicating whether a reference string comes before or after or is the same as the given string in sort order.
515	String.prototype.match()	JavaScript, Method, Reference, Regular Expressions, Réference, Référence, String, prototype
		The match() method retrieves the matches when matching a string against a regular expression.
516	String.prototype.normalize()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Reference, Réference, Référence, String, Unicode, prototype
		The normalize() method returns the Unicode Normalization Form of a given string (if the value isn't a string, it will be converted to one first).
517	String.prototype.quote()	JavaScript, Method, Obsolete, Reference, Référence, String, prototype
		The non-standard quote() method returns a copy of the string, replacing various special characters in the string with their escape sequences and wrapping the result in double-quotes (").
518	String.prototype.repeat()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Reference, Réference, Référence, String, prototype
		The repeat() method constructs and returns a new string which contains the specified number of copies of the string on which it was called, concatenated together.
519	String.prototype.replace()	JavaScript, Method, Reference, Regular Expressions, Réference, Référence, String, prototype
		The replace() method returns a new string with some or all matches of a pattern replaced by a replacement. The pattern can be a string or a RegExp, and the replacement can be a string or a function to be called for each match.
520	String.prototype.search()	JavaScript, Method, Reference, Regular Expressions, Réference, Référence, String, prototype
		The search() method executes a search for a match between a regular expression and this String object.
521	String.prototype.slice()	JavaScript, Method, Reference, Réference, Référence, String, prototype
		The slice() method extracts a section of a string and returns a new string.
522	String.prototype.small()	Deprecated, HTML wrapper methods, JavaScript, Method, Reference, Référence, String, prototype
		The small() method creates a <small> HTML element that causes a string to be displayed in a small font.
523	String.prototype.split()	JavaScript, Method, Reference, Regular Expressions, Réference, Référence, String, prototype
		The split() method splits a String object into an array of strings by separating the string into substrings.
524	String.prototype.startsWith()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Reference, Réference, Référence, String, prototype
		The startsWith() method determines whether a string begins with the characters of another string, returning true or false as appropriate.
525	String.prototype.strike()	Deprecated, HTML wrapper methods, JavaScript, Method, String, prototype
		The strike() method creates a <strike> HTML element that causes a string to be displayed as struck-out text.
526	String.prototype.sub()	Deprecated, HTML wrapper methods, JavaScript, Method, String, prototype
		The sub() method creates a <sub> HTML element that causes a string to be displayed as subscript.
527	String.prototype.substr()	JavaScript, Method, Reference, Réference, Référence, String, prototype
		The substr() method returns the characters in a string beginning at the specified location through the specified number of characters.
528	String.prototype.substring()	JavaScript, Method, Reference, Référence, String, prototype
		The substring() method returns a subset of a string between one index and another, or through the end of the string.
529	String.prototype.sup()	Deprecated, HTML wrapper methods, JavaScript, Method, Reference, Référence, String, prototype
		The sup() method creates a <sup> HTML element that causes a string to be displayed as superscript.
530	String.prototype.toLocaleLowerCase()	Internationalization, JavaScript, Method, Reference, Référence, String, prototype
		The toLocaleLowerCase() method returns the calling string value converted to lower case, according to any locale-specific case mappings.
531	String.prototype.toLocaleUpperCase()	Internationalization, JavaScript, Method, Reference, Référence, String, prototype
		The toLocaleUpperCase() method returns the calling string value converted to upper case, according to any locale-specific case mappings.
532	String.prototype.toLowerCase()	JavaScript, Method, Reference, Référence, String, prototype
		The toLowerCase() method returns the calling string value converted to lowercase.
533	String.prototype.toSource()	JavaScript, Method, Non-standard, Reference, Référence, String, prototype
		The toSource() method returns a string representing the source code of the object.
534	String.prototype.toString()	JavaScript, Method, Reference, Référence, String, prototype
		The toString() method returns a string representing the specified object.
535	String.prototype.toUpperCase()	JavaScript, Method, Reference, Référence, String, prototype
		The toUpperCase() method returns the calling string value converted to uppercase.
536	String.prototype.trim()	ECMAScript5, JavaScript, Method, Reference, Référence, String, prototype
		The trim() method removes whitespace from both ends of a string. Whitespace in this context is all the whitespace characters (space, tab, no-break space, etc.) and all the line terminator characters (LF, CR, etc.).
537	String.prototype.trimLeft()	JavaScript, Method, Non-standard, Reference, Référence, String, prototype
		The trimLeft() removes whitespace from the left end of the string.
538	String.prototype.trimRight()	JavaScript, Method, Non-standard, Reference, Référence, String, prototype
		The trimRight() method removes whitespace from the right end of the string.
539	String.prototype.valueOf()	JavaScript, Method, Reference, Référence, String, prototype
		The valueOf() method returns the primitive value of a String object.
540	String.prototype[@@iterator]()	ECMAScript6, Experimental, Expérimental, Iterator, JavaScript, Method, Reference, Référence, String, prototype
		The [@@iterator]() method returns a new Iterator object that iterates over the code points of a String value, returning each code point as a String value.
541	String.raw()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Reference, Réference, Référence, String
		The static String.raw() method is a tag function of template strings, like the r prefix in Python or the @ prefix in C# for string literals, this function is used to get the raw string form of template strings.
542	Symbol	ECMAScript6, Experimental, Expérimental, JavaScript, Symbol
		A symbol is a unique and immutable data type and may be used as an identifier for object properties. The symbol object is an implicit object wrapper for the symbol primitive data type.
543	Symbol.for()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Symbol
		The Symbol.for(key) method searches for existing symbols in a runtime-wide symbol registry with the given key and returns it if found. Otherwise a new symbol gets created in the global symbol registry with this key.
544	Symbol.iterator	ECMAScript6, Experimental, Expérimental, JavaScript, Property, Symbol
		The Symbol.iterator well-known symbol specifies the default iterator for an object. Used by for...of.
545	Symbol.keyFor()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Symbol
		The Symbol.keyFor(sym) method retrieves a shared symbol key from the global symbol registry for the given symbol.
546	Symbol.match	ECMAScript6, Experimental, Expérimental, JavaScript, Property, Symbol
		The Symbol.match well-known symbol specifies the matching of a regular expression against a string. This function is called by the String.prototype.match() method.
547	Symbol.prototype	Experimental, Expérimental, JavaScript, Property, Symbol
		The Symbol.prototype property represents the prototype for the Symbol constructor.
548	Symbol.prototype.toSource()	JavaScript, Method, Non-standard, Symbol, prototype
		The toSource() method returns a string representing the source code of the object.
549	Symbol.prototype.toString()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Symbol, prototype
		The toString() method returns a string representing the specified Symbol object.
550	Symbol.prototype.valueOf()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, Symbol, prototype
		The valueOf() method returns the primitive value of a Symbol object.
551	SyntaxError	Error, JavaScript, Object, Reference, Référence, SyntaxError
		The SyntaxError object represents an error when trying to interpret syntactically invalid code.
552	SyntaxError.prototype	Error, JavaScript, Property, SyntaxError, prototype
		The SyntaxError.prototype property represents the prototype for the SyntaxError constructor.
553	TypeError	Error, JavaScript, Object, Reference, Réference, Référence, TypeError
		The TypeError object represents an error when a value is not of the expected type.
554	TypeError.prototype	Error, JavaScript, Property, TypeError, prototype
		The TypeError.prototype property represents the prototype for the TypeError constructor.
555	TypedArray	JavaScript, TypedArray, TypedArrays
		A TypedArray object describes an array-like view of an underlying binary data buffer. There is no global property named TypedArray, nor is there a directly visible TypedArray constructor.  Instead, there are a number of different global properties, whose values are typed array constructors for specific element types, listed below. On the following pages you will find common properties and methods that can be used with any typed array containing elements of any type.
556	TypedArray.BYTES_PER_ELEMENT	JavaScript, Property, TypedArray, TypedArrays
		The TypedArray.BYTES_PER_ELEMENT property represents the size in bytes of each element in an typed array.
557	TypedArray.from()	ECMAScript6, JavaScript, Method, TypedArray, TypedArrays
		The TypedArray.from() method creates a new typed array from an array-like or iterable object. This method is nearly the same as Array.from().
558	TypedArray.name	JavaScript, Property, TypedArray, TypedArrays
		The TypedArray.name property represents a string value of the typed array constructor name.
559	TypedArray.of()	ECMAScript6, JavaScript, Method, TypedArray, TypedArrays
		The TypedArray.of() method creates a new typed array with a variable number of arguments. This method is nearly the same as Array.of().
560	TypedArray.prototype	JavaScript, Property, TypedArray, TypedArrays
		The TypedArray.prototype property represents the prototype for TypedArray constructors.
561	TypedArray.prototype.buffer	JavaScript, Property, TypedArray, TypedArrays, prototype
		The buffer accessor property represents the ArrayBuffer referenced by a TypedArray at construction time.
562	TypedArray.prototype.byteLength	JavaScript, Property, TypedArray, TypedArrays, prototype
		The byteLength accessor property represents the length (in bytes) of a typed array from the start of its ArrayBuffer.
563	TypedArray.prototype.byteOffset	JavaScript, Property, TypedArray, TypedArrays, prototype
		The byteOffset accessor property represents the offset (in bytes) of a typed array from the start of its ArrayBuffer.
564	TypedArray.prototype.copyWithin()	JavaScript, Method, TypedArray, TypedArrays, prototype
		The copyWithin() method copies the sequence of array elements within the array to the position starting at target. The copy is taken from the index positions of the second and third arguments start and end. The end argument is optional and defaults to the length of the array. This method has the same algorithm as Array.prototype.copyWithin. TypedArray is one of the typed array types here.
565	TypedArray.prototype.entries()	ECMAScript6, Iterator, JavaScript, Method, Reference, Référence, TypedArray, TypedArrays, prototype
		The entries() method returns a new Array Iterator object that contains the key/value pairs for each index in the array.
566	TypedArray.prototype.every()	ECMAScript6, JavaScript, Method, TypedArray, TypedArrays, prototype
		The every() method tests whether all elements in the typed array pass the test implemented by the provided function. This method has the same algorithm as Array.prototype.every(). TypedArray is one of the typed array types here.
567	TypedArray.prototype.fill()	ECMAScript6, JavaScript, Method, TypedArray, TypedArrays, prototype
		The fill() method fills all the elements of a typed array from a start index to an end index with a static value. This method has the same algorithm as Array.prototype.fill(). TypedArray is one of the typed array types here.
568	TypedArray.prototype.filter()	ECMAScript6, JavaScript, Method, TypedArray, TypedArrays, prototype
		The filter() method creates a new typed array with all elements that pass the test implemented by the provided function. This method has the same algorithm as Array.prototype.filter(). TypedArray is one of the typed array types here.
569	TypedArray.prototype.find()	ECMAScript6, JavaScript, Method, Reference, Référence, TypedArray, TypedArrays, prototype
		The find() method returns a value in the typed array, if an element satisfies the provided testing function. Otherwise undefined is returned. TypedArray is one of the typed array types here.
570	TypedArray.prototype.findIndex()	ECMAScript6, JavaScript, Method, Reference, Référence, TypedArray, TypedArrays, prototype
		The findIndex() method returns an index in the typed array, if an element in the typed array satisfies the provided testing function. Otherwise -1 is returned.
571	TypedArray.prototype.forEach()	ECMAScript6, JavaScript, Method, Reference, Référence, TypedArray, TypedArrays, prototype
		The forEach() method executes a provided function once per array element. This method has the same algorithm as Array.prototype.forEach(). TypedArray is one of the typed array types here.
572	TypedArray.prototype.includes()	ECMAScript7, Experimental, Expérimental, JavaScript, Method, TypedArray, TypedArrays, prototype
		The includes() method determines whether a typed array includes a certain element, returning true or false as appropriate. This method has the same algorithm as Array.prototype.includes(). TypedArray is one of the typed array types here.
573	TypedArray.prototype.indexOf()	ECMAScript6, JavaScript, Method, TypedArray, TypedArrays, prototype
		The indexOf() method returns the first index at which a given element can be found in the typed array, or -1 if it is not present. This method has the same algorithm as Array.prototype.indexOf(). TypedArray is one of the typed array types here.
574	TypedArray.prototype.join()	ECMAScript6, JavaScript, Method, TypedArray, TypedArrays, prototype
		The join() method joins all elements of an array into a string. This method has the same algorithm as Array.prototype.join(). TypedArray is one of the typed array types here.
575	TypedArray.prototype.keys()	ECMAScript6, Iterator, JavaScript, Method, Reference, Référence, TypedArray, TypedArrays, prototype
		The keys() method returns a new Array Iterator object that contains the keys for each index in the array.
576	TypedArray.prototype.lastIndexOf()	ECMAScript6, JavaScript, Method, TypedArray, TypedArrays, prototype
		The lastIndexOf() method returns the last index at which a given element can be found in the typed array, or -1 if it is not present. The typed array is searched backwards, starting at fromIndex. This method has the same algorithm as Array.prototype.lastIndexOf(). TypedArray is one of the typed array types here.
577	TypedArray.prototype.length	JavaScript, Property, TypedArray, TypedArrays, prototype
		The length accessor property represents the length (in elements) of a typed array.
578	TypedArray.prototype.map()	ECMAScript6, JavaScript, Method, TypedArray, TypedArrays, prototype
		The map() method creates a new typed array with the results of calling a provided function on every element in this typed array. This method has the same algorithm as Array.prototype.map(). TypedArray is one of the typed array types here.
579	TypedArray.prototype.move()	JavaScript, Method, Obsolete, TypedArray, prototype
		The move() method used to copy the sequence of array elements within the array to the position starting at target. However, this non-standard method has been replaced with the standard TypedArray.prototype.copyWithin() method. TypedArray is one of the typed array types here.
580	TypedArray.prototype.reduce()	JavaScript, Method, Reference, Référence, TypedArray, TypedArrays, prototype
		The reduce() method applies a function against an accumulator and each value of the typed array (from left-to-right) has to reduce it to a single value. This method has the same algorithm as Array.prototype.reduce(). TypedArray is one of the typed array types here.
581	TypedArray.prototype.reduceRight()	JavaScript, Method, Reference, Référence, TypedArray, TypedArrays, prototype
		The reduceRight() method applies a function against an accumulator and each value of the typed array (from right-to-left) has to reduce it to a single value. This method has the same algorithm as Array.prototype.reduceRight(). TypedArray is one of the typed array types here.
582	TypedArray.prototype.reverse()	ECMAScript6, JavaScript, Method, TypedArray, TypedArrays, prototype
		The reverse() method reverses a typed array in place. The first typed array element becomes the last and the last becomes the first. This method has the same algorithm as Array.prototype.reverse(). TypedArray is one of the typed array types here.
583	TypedArray.prototype.set()	JavaScript, Method, TypedArray, TypedArrays, prototype
		The set() method stores multiple values in the typed array, reading input values from a specified array.
584	TypedArray.prototype.slice()	ECMAScript6, JavaScript, Method, TypedArray, TypedArrays, prototype
		The slice() method returns a shallow copy of a portion of a typed array into a new typed array object. This method has the same algorithm as Array.prototype.slice(). TypedArray is one of the typed array types here.
585	TypedArray.prototype.some()	ECMAScript6, JavaScript, Method, TypedArray, TypedArrays, prototype
		The some() method tests whether some element in the typed array passes the test implemented by the provided function. This method has the same algorithm as Array.prototype.some(). TypedArray is one of the typed array types here.
586	TypedArray.prototype.subarray()	JavaScript, Method, TypedArray, TypedArrays, prototype
		The subarray() method returns a new TypedArray on the same ArrayBuffer store and with the same element types as for this TypedArray object. The begin offset is inclusive and the end offset is exclusive. TypedArray is one of the typed array types.
587	TypedArray.prototype.values()	ECMAScript6, Iterator, JavaScript, Method, TypedArray, TypedArrays, prototype
		The values() method returns a new Array Iterator object that contains the values for each index in the array.
588	TypedArray.prototype[@@iterator]()	Iterator, JavaScript, Method, Reference, Référence, TypedArray, TypedArrays, prototype
		The initial value of the @@iterator property is the same function object as the initial value of the values property.
589	URIError	Error, JavaScript, Object, Reference, Référence, URIError
		The URIError object represents an error when a global URI handling function was used in a wrong way.
590	URIError.prototype	Error, JavaScript, Property, URIError, prototype
		The URIError.prototype property represents the prototype for the URIError constructor.
591	Uint16Array	Constructor, JavaScript, TypedArray, TypedArrays, Uint16Array
		The Uint16Array typed array represents an array of 16-bit unsigned integers in the platform byte order. If control over byte order is needed, use DataView instead. The contents are initialized to 0. Once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
592	Uint32Array	Constructor, JavaScript, TypedArray, TypedArrays
		The Uint32Array typed array represents an array of 32-bit unsigned integers in the platform byte order. If control over byte order is needed, use DataView instead. The contents are initialized to 0. Once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
593	Uint8Array	Constructor, JavaScript, TypedArray, TypedArrays, Uint8Array
		The Uint8Array typed array represents an array of 8-bit unsigned integers. The contents are initialized to 0. Once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
594	Uint8ClampedArray	Constructor, JavaScript, TypedArray, TypedArrays, Uint8ClampedArray
		The Uint8ClampedArray typed array represents an array of 8-bit unsigned integers clamped to 0-255. The contents are initialized to 0. Once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).
595	WeakMap	ECMAScript6, Experimental, Expérimental, JavaScript, WeakMap
		The WeakMap object is a collection of key/value pairs in which the keys are objects and the values can be arbitrary values.
596	WeakMap.prototype	ECMAScript6, Experimental, Expérimental, JavaScript, Property, WeakMap
		The WeakMap.prototype property represents the prototype for the WeakMap constructor.
597	WeakMap.prototype.clear()	JavaScript, Method, Obsolete, WeakMap, prototype
		The clear() method removes all elements from a WeakMap object.
598	WeakMap.prototype.delete()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, WeakMap, prototype
		The delete() method removes the specified element from a WeakMap object.
599	WeakMap.prototype.get()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, WeakMap, prototype
		The get() method returns a specified element from a WeakMap object.
600	WeakMap.prototype.has()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, WeakMap, prototype
		The has() method returns a boolean indicating whether an element with the specified key exists in the WeakMap object or not.
601	WeakMap.prototype.set()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, WeakMap, prototype
		The set() method adds a new element with a specified key and value to a WeakMap object.
602	WeakSet	ECMAScript6, Experimental, Expérimental, JavaScript, WeakSet
		The WeakSet object lets you store weakly held objects in a collection.
603	WeakSet.prototype	ECMAScript6, Experimental, Expérimental, JavaScript, Property, WeakSet
		The WeakSet.prototype property represents the prototype for the WeakSet constructor.
604	WeakSet.prototype.add()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, WeakSet, prototype
		The add() method appends a new object to the end of a WeakSet object.
605	WeakSet.prototype.clear()	JavaScript, Method, Obsolete, WeakSet, prototype
		The clear() method removes all elements from a WeakSet object.
606	WeakSet.prototype.delete()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, WeakSet, prototype
		The delete() method removes the specified element from a WeakSet object.
607	WeakSet.prototype.has()	ECMAScript6, Experimental, Expérimental, JavaScript, Method, WeakSet, prototype
		The has() method returns a boolean indicating whether an object exists in a WeakSet or not.
608	decodeURI()	JavaScript
		The decodeURI() function decodes a Uniform Resource Identifier (URI) previously created by encodeURI or by a similar routine.
609	decodeURIComponent()	JavaScript, JavaScript Reference
		The decodeURIComponent() method decodes a Uniform Resource Identifier (URI) component previously created by encodeURIComponent or by a similar routine.
610	encodeURI()	JavaScript, URI
		The encodeURI() method encodes a Uniform Resource Identifier (URI) by replacing each instance of certain characters by one, two, three, or four escape sequences representing the UTF-8 encoding of the character (will only be four escape sequences for characters composed of two "surrogate" characters).
611	encodeURIComponent()	JavaScript, URI
		The encodeURIComponent() method encodes a Uniform Resource Identifier (URI) component by replacing each instance of certain characters by one, two, three, or four escape sequences representing the UTF-8 encoding of the character (will only be four escape sequences for characters composed of two "surrogate" characters).
612	escape()	Deprecated, JavaScript
		The deprecated escape() method computes a new string in which certain characters have been replaced by a hexadecimal escape sequence. Use encodeURI or encodeURIComponent instead.
613	eval()	JavaScript
		The eval() method evaluates JavaScript code represented as a string.
614	isFinite()	JavaScript
		The global isFinite() function determines whether the passed value is a finite number. If needed, the parameter is first converted to a number.
615	isNaN()	JavaScript
		The isNaN() function determines whether a value is NaN or not. Note: coercion inside the isNaN function has interesting rules; you may alternatively want to use Number.isNaN(), as defined in ECMAScript 6, or you can use typeof to determine if the value is Not-A-Number.
616	null	JavaScript, Literal, Primitive
		The value null is a JavaScript literal representing null or an "empty" value, i.e. no object value is present. It is one of JavaScript's primitive values.
617	parseFloat()	JavaScript
		The parseFloat() function parses a string argument and returns a floating point number.
618	parseInt()	JavaScript
		The parseInt() function parses a string argument and returns an integer of the specified radix (the base in mathematical numeral systems).
619	undefined	JavaScript
		The global undefined property represents the primitive value undefined. It is one of JavaScript's primitive types.
620	unescape()	JavaScript
		The deprecated unescape() method computes a new string in which hexadecimal escape sequences are replaced with the character that it represents. The escape sequences might be introduced by a function like escape. Because unescape is deprecated, use decodeURI or decodeURIComponent instead.
621	uneval()	JavaScript, Non-standard
		The uneval() method creates an string representation of the source code of an Object.
622	Statements and declarations	JavaScript, Reference, Réference, Référence, statements
		JavaScript applications consist of statements with an appropriate syntax. A single statement may span multiple lines. Multiple statements may occur on a single line if each statement is separated by a semicolon. This isn't a keyword, but a group of keywords.
623	Legacy generator function	JavaScript, Legacy Iterator, Non-standard, Reference, Réference, Référence
		The legacy generator function statement declares legacy generator functions with the specified parameters.
624	block	JavaScript, Reference, Réference, Référence, Statement
		A block statement (or compound statement in other languages) is used to group zero or more statements. The block is delimited by a pair of curly brackets.
625	break	JavaScript, Statement
		The break statement terminates the current loop, switch, or label statement and transfers program control to the statement following the terminated statement.
626	class	Classes, Declaration, ECMAScript6, Experimental, Expérimental, JavaScript, Statement
		The class declaration creates a new class with a given name using prototype-based inheritance.
627	const	ECMAScript6, Experimental, Expérimental, JavaScript, Statement
		The const declaration creates a read-only named constant.
628	continue	JavaScript, Statement
		The continue statement terminates execution of the statements in the current iteration of the current or labeled loop, and continues execution of the loop with the next iteration.
629	debugger	JavaScript, Statement
		The debugger statement invokes any available debugging functionality, such as setting a breakpoint. If no debugging functionality is available, this statement has no effect.
630	do...while	JavaScript, Statement
		The do...while statement creates a loop that executes a specified statement until the test condition evaluates to false. The condition is evaluated after executing the statement, resulting in the specified statement executing at least once.
631	empty	JavaScript, Statement
		An empty statement is used to provide no statement, although the JavaScript syntax would expect one.
632	export	ECMAScript6, JavaScript, NeedsUpdate, Statement
		The export statement is used to allow a signed script to provide properties, functions, and objects to other signed or unsigned scripts. It is an ancient Netscape 4 feature that has been removed in Firefox 3.5 (bug 447713). In the future, a new export declaration will be specified by ECMAScript 6 modules.
633	for	JavaScript, Loop, Statement, for
		The for statement creates a loop that consists of three optional expressions, enclosed in parentheses and separated by semicolons, followed by a statement or a set of statements executed in the loop.
634	for each...in	Deprecated, E4X, JavaScript, Statement
		The for each...in statement iterates a specified variable over all values of object's properties. For each distinct property, a specified statement is executed.
635	for...in	JavaScript, Statement
		The for..in statement iterates over the enumerable properties of an object, in arbitrary order. For each distinct property, statements can be executed.
636	for...of	ECMAScript6, Experimental, Expérimental, JavaScript, Statement
		The for...of statement creates a loop Iterating over iterable objects (including Array, Map, Set, arguments object and so on), invoking a custom iteration hook with statements to be executed for the value of each distinct property.
637	function	JavaScript, Statement
		The function declaration defines a function with the specified parameters.
638	function*	ECMAScript6, Experimental, Expérimental, Function, Iterator, JavaScript, Statement
		The function* declaration (function keyword followed by an asterisk) defines a generator function, which returns a Generator object.
639	if...else	JavaScript, Statement
		The if statement executes a statement if a specified condition is true. If the condition is false, another statement can be executed.
640	import	ECMAScript6, Experimental, Expérimental, JavaScript, Modules, Statement
		The import statement is used to import functions that have been exported from an external module, another script, etc.
641	label	JavaScript, Statement
		The labeled statement can be used with break or continue statements. It is prefixing a statement with an identifier which you can refer to.
642	let	ECMAScript6, Experimental, Expérimental, JavaScript, Statement
		The let statement declares a block scope local variable, optionally initializing it to a value.
643	return	JavaScript, Statement
		The return statement ends function execution and specifies a value to be returned to the function caller.
644	switch	JavaScript, Statement
		The switch statement evaluates an expression, matching the expression's value to a case clause, and executes statements associated with that case.
645	throw	JavaScript, Statement
		The throw statement throws a user-defined exception. Execution of the current function will stop (the statements after throw won't be executed), and control will be passed to the first catch block in the call stack. If no catch block exists among caller functions, the program will terminate.
646	try...catch	JavaScript, Statement
		The try...catch statement marks a block of statements to try, and specifies a response, should an exception be thrown.
647	var	JavaScript, Statement
		The variable statement declares a variable, optionally initializing it to a value.
648	while	JavaScript, Statement
		The while statement creates a loop that executes a specified statement as long as the test condition evaluates to true. The condition is evaluated before executing the statement.
649	with	Deprecated, JavaScript, Statement
		The with statement extends the scope chain for a statement.
650	Strict mode	ECMAScript5, JavaScript, Strict Mode
		ECMAScript 5's strict mode is a way to opt in to a restricted variant of JavaScript. Strict mode isn't just a subset: it intentionally has different semantics from normal code. Browsers not supporting strict mode will run strict mode code with different behavior from browsers that do, so don't rely on strict mode without feature-testing for support for the relevant aspects of strict mode. Strict mode code and non-strict mode code can coexist, so scripts can opt into strict mode incrementally.
651	Transitioning to strict mode	Advanced, JavaScript
		ECMAScript 5 introduced strict mode which is now implemented in all major browsers (including IE10). While making web browsers interpret code as strict is easy (just add "use strict"; at the top of your source code), transitioning an existing code base to strict mode requires a bit more work.
652	Template strings	ECMAScript6, Experimental, Expérimental, JavaScript
		Template strings are string literals allowing embedded expressions. You can use multi-line strings and string interpolation features with them.
653	JavaScript shells	Extensions, JavaScript, Tools
		A JavaScript shell allows you to quickly test snippets of JavaScript code without having to reload a web page. They are extremely useful for developing and debugging code.
654	JavaScript technologies overview	Beginner, DOM, JavaScript
		Whereas HTML defines a webpage's structure and content and CSS sets the formatting and appearance, JavaScript adds interactivity to a webpage and creates rich web applications.
655	JavaScript typed arrays	Guide, JavaScript
		JavaScript typed arrays are array-like objects and provide a mechanism for accessing raw binary data. As you already know, Array objects grow and shrink dynamically and can have any JavaScript value. JavaScript engines perform optimizations so that these arrays are fast. However, as web applications become more and more powerful, adding features such as audio and video manipulation, access to raw data using WebSockets, and so forth, it has become clear that there are times when it would be helpful for JavaScript code to be able to quickly and easily manipulate raw binary data in typed arrays.
656	Memory Management	JavaScript, memory
		Low-level languages, like C, have low-level memory management primitives like malloc() and free(). On the other hand, JavaScript values are allocated when things (objects, strings, etc.) are created and "automatically" free'd when they are not used anymore. The latter process is called garbage collection. This "automatically" is a source of confusion and gives JavaScript (and high-level languages) developers the impression they can decide not to care about memory management. This is a mistake.
657	New in JavaScript	JavaScript, Versions
		This chapter contains information about JavaScript's version history and implementation status for Mozilla/SpiderMonkey-based JavaScript applications, such as Firefox.
658	ECMAScript 5 support in Mozilla	ECMAScript5, JavaScript, Versions
		ECMAScript 5.1, the latest edition of the standard upon which JavaScript is based, was approved in June 2011.
659	ECMAScript 6 support in Mozilla	ECMAScript6, JavaScript
		ECMAScript 6 is the next version of the standard, code-named "ES.next". Specification drafts can be found on the official ECMA wiki. The first working draft based on ECMAScript 5.1, was published on July 12, 2011 as "ES.next". As of August 2014, ECMAScript 6 is already feature frozen, will be finished during 2015 and will start to go into the official publication process starting in March 2015 (to be finished in June 2015).
660	ECMAScript 7 support in Mozilla	ECMAScript7, JavaScript
		ECMAScript 7 is the next evolution of the ECMA-262 standard. New language features are proposed already as the draft of Edition 6 is feature frozen and nears its completion. You can see the current proposals on the tc39/ecma262 GitHub repository. Current issues with the specification process are planned to be solved by introducing stages and champions for feature sets. Also, a two year release cycle of the standard is proposed. For more information about the post-ES6 specification process, see this presentation by Rafael Weinstein.
661	Firefox JavaScript changelog	JavaScript, Versions
		The following is a changelog for JavaScript features in Firefox releases.
662	New in JavaScript 1.1	JavaScript, Versions
		The following is a changelog for JavaScript from Netscape Navigator 2.0 to 3.0. The old Netscape documentation references this as "Features added after version 1". Netscape Navigator 3.0 was released on August 19, 1996. Netscape Navigator 3.0 was the second major version of the browser with JavaScript support.
663	New in JavaScript 1.2	JavaScript, Versions
		The following is a changelog for JavaScript from Netscape Navigator 3.0 to 4.0. The old Netscape documentation can be found on archive.org. Netscape Navigator 4.0 was released on June 11, 1997. Netscape Navigator 4.0 was the third major version of the browser with JavaScript support.
664	New in JavaScript 1.3	JavaScript, Versions
		The following is a changelog for JavaScript from Netscape Navigator 4.0 to 4.5. The old Netscape documentation can be found on archive.org. Netscape Navigator 4.5 was released on October 19, 1998.
665	New in JavaScript 1.4	JavaScript, Versions
		The following is a changelog for JavaScript 1.4, which was only used for Netscape's server side JavaScript released in 1999. The old Netscape documentation can be found on archive.org.
666	New in JavaScript 1.5	JavaScript, Versions
		The following is a changelog for JavaScript 1.5. This version was included in Netscape Navigator 6.0 was released on November 14, 2000 and was also used in later versions of Netscape Navigator and Firefox 1.0. You can compare JavaScript 1.5 to JScript version 5.5 and Internet Explorer 5.5, which was released in July 2000. The corresponding ECMA standard is ECMA-262 Edition 3 (from December 1999).
667	New in JavaScript 1.6	JavaScript, Versions
		The following is a changelog for JavaScript 1.6. This version was included in Firefox 1.5 (Gecko 1.8), which was released in November 2005. The corresponding ECMA standard is ECMA-262 Edition 3 and ECMAScript for XML (E4X) with some additional features. Several new features were introduced: E4X, several new Array methods, and Array and String generics.
668	New in JavaScript 1.7	JavaScript, Versions
		The following is a changelog for JavaScript 1.7. This version was included in Firefox 2 (October 2006).
669	New in JavaScript 1.8	JavaScript, Versions
		The following is a changelog for JavaScript 1.8. This version was included in Firefox 3 and is part of Gecko 1.9. See bug 380236 for a tracking development bug for JavaScript 1.8.
670	New in JavaScript 1.8.1	Firefox 3.5, JavaScript, Versions
		The following is a changelog for JavaScript 1.8.1. This version was included in Firefox 3.5.
671	New in JavaScript 1.8.5	ECMAScript5, Firefox 4, JavaScript, JavaScript 1.8.5, Versions
		The following is a changelog for JavaScript 1.8.5. This version was included in Firefox 4.