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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.
Syntax
string[Symbol.iterator]Return value
A new Iterator object.
Examples
Using [@@iterator]()
var string = 'A\uD835\uDC68'; var strIter = string[Symbol.iterator](); console.log(strIter.next().value); // "A" console.log(strIter.next().value); // "\uD835\uDC68"
Using [@@iterator]() with for..of
var string = 'A\uD835\uDC68B\uD835\uDC69C\uD835\uDC6A';
for (var v of string) {
console.log(v);
}
// "A"
// "\uD835\uDC68"
// "B"
// "\uD835\uDC69"
// "C"
// "\uD835\uDC6A"
Specifications
| Specification | Status | Comment |
|---|---|---|
| ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'String.prototype[@@iterator]()' in that specification. |
Standard | Initial definition. |
| ECMAScript 2017 Draft (ECMA-262) The definition of 'String.prototype[@@iterator]()' in that specification. |
Draft |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | (Yes) | 36 (36) [1] | No support | No support | No support |
| Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | No support | (Yes) | 36.0 (36) [1] | No support | No support | No support |
[1] From Gecko 17 (Firefox 17 / Thunderbird 17 / SeaMonkey 2.14) to Gecko 26 (Firefox 26 / Thunderbird 26 / SeaMonkey 2.23 / Firefox OS 1.2) the iterator property was used (bug 907077), and from Gecko 27 to Gecko 35 the "@@iterator" placeholder was used. In Gecko 36 (Firefox 36 / Thunderbird 36 / SeaMonkey 2.33), the @@iterator symbol got implemented (bug 918828).