The entries() method returns a new Iterator object that contains an array of [value, value] for each element in the Set object, in insertion order. For Set objects there is no key like in Map objects. However, to keep the API similar to the Map object, each entry has the same value for its key and value here, so that an array [value, value] is returned.

Syntax

mySet.entries()

Return value

A new Iterator object that contains an array of [value, value] for each element in the given Set, in insertion order.

Examples

Using entries()

var mySet = new Set();
mySet.add('foobar');
mySet.add(1);
mySet.add('baz');

var setIter = mySet.entries();

console.log(setIter.next().value); // ["foobar", "foobar"]
console.log(setIter.next().value); // [1, 1]
console.log(setIter.next().value); // ["baz", "baz"]

Specifications

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

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support381224 No258
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic support38381224 No258

See also

Document Tags and Contributors

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