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.
str[Symbol.iterator]
A new Iterator
object.
[@@iterator]()
var str = 'A\uD835\uDC68'; var strIter = str[Symbol.iterator](); console.log(strIter.next().value); // "A" console.log(strIter.next().value); // "\uD835\uDC68"
[@@iterator]()
with for..of
var str = 'A\uD835\uDC68B\uD835\uDC69C\uD835\uDC6A'; for (var v of str) { console.log(v); } // "A" // "\uD835\uDC68" // "B" // "\uD835\uDC69" // "C" // "\uD835\uDC6A"
Specification | Status | Comment |
---|---|---|
ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'String.prototype[@@iterator]()' in that specification. | Standard | Initial definition. |
ECMAScript Latest Draft (ECMA-262) The definition of 'String.prototype[@@iterator]()' in that specification. | Living Standard |
Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic support | Yes | Yes |
17 — 271 364 |
No | No | No |
Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
---|---|---|---|---|---|---|---|
Basic support | No | No | ? | 36 | No | No | No |
1. Supported as iterator
.
2. A placeholder property named @@iterator
is used.
3. Supported as @@iterator
.
4. The @@iterator
symbol is implemented.
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/@@iterator