The initial value of the @@iterator property is the same function object as the initial value of the values property.

Syntax

mySet[Symbol.iterator]

Return value

The Set iterator function, which is the values() function by default.

Examples

Using [@@iterator]()

var mySet = new Set();
mySet.add('0');
mySet.add(1);
mySet.add({});

var setIter = mySet[Symbol.iterator]();

console.log(setIter.next().value); // "0"
console.log(setIter.next().value); // 1
console.log(setIter.next().value); // Object

Using [@@iterator]() with for..of

var mySet = new Set();
mySet.add('0');
mySet.add(1);
mySet.add({});

for (var v of mySet) {
  console.log(v);
}

Specifications

Specification Status Comment
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'Set.prototype[@@iterator]' in that specification.
Standard Initial definition.
ECMAScript Latest Draft (ECMA-262)
The definition of 'Set.prototype[@@iterator]' in that specification.
Living Standard  

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support Yes Yes

17 — 271

27 — 362 3

364

No Yes Yes
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic support Yes Yes Yes

17 — 271

27 — 362 3

364

No Yes Yes

1. Supported as iterator.

2. A placeholder property named @@iterator is used.

3. Supported as @@iterator.

4. The @@iterator symbol is implemented.

See also

Document Tags and Contributors

 Contributors to this page: fscholz, nmve, kdex, eduardoboucas, arai
 Last updated by: fscholz,