The entries()
method returns a new Array Iterator
object that contains the key/value pairs for each index in the array.
var a = ['a', 'b', 'c']; var iterator = a.entries(); console.log(iterator.next().value); // [0, 'a'] console.log(iterator.next().value); // [1, 'b'] console.log(iterator.next().value); // [2, 'c']
Syntax
a.entries()
Return value
A new Array
iterator object.
Examples
Using a for…of loop
var a = ['a', 'b', 'c']; var iterator = a.entries(); for (let e of iterator) { console.log(e); } // [0, 'a'] // [1, 'b'] // [2, 'c']
Specifications
Specification | Status | Comment |
---|---|---|
ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'Array.prototype.entries' in that specification. |
Standard | Initial definition. |
ECMAScript Latest Draft (ECMA-262) The definition of 'Array.prototype.entries' in that specification. |
Living Standard |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic support | 38 | Yes | 28 | No | 25 | 8 |
Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
---|---|---|---|---|---|---|---|
Basic support | Yes | Yes | Yes | 28 | No | Yes | 8 |
See also
Document Tags and Contributors
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Contributors to this page:
fscholz,
erikadoyle,
kdex,
David_Gilbertson,
SphinxKnight,
Aravind46,
eduardoboucas,
Delapouite,
arai,
fasttime,
Mingun,
realityking,
vladikoff
Last updated by:
fscholz,