Non-standard. The
StopIteration object is a SpiderMonkey-specific feature. For future-facing usages, consider using for..of loops and the iterator protocol.Summary
The StopIteration object is used to tell the end of the iteration in the legacy iterator protocol.
Syntax
StopIteration
Description
An overview of the usage is available on the Iterators and Generators page.
Examples
StopIteration is thrown by Iterator.
var a = {
x: 10,
y: 20,
};
var iter = Iterator(a);
console.log(iter.next()); // ["x", 10]
console.log(iter.next()); // ["y", 20]
console.log(iter.next()); // throws StopIteration
Throwing StopIteration.
function f() {
yield 1;
yield 2;
throw StopIteration;
yield 3; // this is not executed.
}
for (var n in f()) {
console.log(n); // 1
// 2
}
Specifications
Non-standard. Not part of any current standards document.