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The entries()
method returns a new Array Iterator
object that contains the key/value pairs for each index in the array.
Syntax
arr.entries()
Return value
A new Array
iterator object.
Examples
var arr = ['a', 'b', 'c']; var eArr = arr.entries(); console.log(eArr.next().value); // [0, 'a'] console.log(eArr.next().value); // [1, 'b'] console.log(eArr.next().value); // [2, 'c']
Same as above, using a for…of loop:
var arr = ['a', 'b', 'c']; var eArr = arr.entries(); for (let e of eArr) { console.log(e); }
Specifications
Specification | Status | Comment |
---|---|---|
ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'Array.prototype.entries' in that specification. |
Standard | Initial definition. |
ECMAScript 2017 Draft (ECMA-262) The definition of 'Array.prototype.entries' in that specification. |
Draft |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | 38 | 28 (28) | No support | 25 | 7.1 |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | No support | No support | 28.0 (28) | No support | No support | 8.0 |
See also
Document Tags and Contributors
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SphinxKnight,
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Last updated by:
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