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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

str[Symbol.iterator]

Return value

A new Iterator object.

Examples

Using [@@iterator]()

var str = 'A\uD835\uDC68';

var strIter = str[Symbol.iterator]();

console.log(strIter.next().value); // "A"
console.log(strIter.next().value); // "\uD835\uDC68"

Using [@@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"

Specifications

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  

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support Yes Yes

17 — 271

27 — 362 3

364

No No No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS 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.

See also

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