The entries()
method returns a new Array Iterator
object that contains the key/value pairs for each index in the array.
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Syntax
array.entries()
Return value
A new Array
iterator object.
Examples
Iterating with index and element
const a = ['a', 'b', 'c']; for (const [index, element] of a.entries()) console.log(index, element); // 0 'a' // 1 'b' // 2 'c'
Using a forโฆof 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 |
---|
ECMAScript (ECMA-262) The definition of 'Array.prototype.entries' in that specification. |
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.
Desktop | Mobile | Server | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
entries | Chrome Full support 38 | Edge Full support 12 | Firefox Full support 28 | IE No support No | Opera Full support 25 | Safari Full support 8 | WebView Android Full support 38 | Chrome Android Full support 38 | Firefox Android Full support 28 | Opera Android Full support 25 | Safari iOS Full support 8 | Samsung Internet Android Full support 3.0 | nodejs Full support 0.12 |
Legend
- Full support
- Full support
- No support
- No support