The entries() method returns a new Array iterator object that contains the key/value pairs for each index in the array.



Return value

A new Array Iterator object.


Iteration using for...of loop

var arr = new Uint8Array([10, 20, 30, 40, 50]);
var eArray = arr.entries();
// your browser must support for..of loop
// and let-scoped variables in for loops
for (let n of eArray) {

Alternative iteration

var arr = new Uint8Array([10, 20, 30, 40, 50]);
var eArr = arr.entries();
console.log(eArr.next().value); // [0, 10]
console.log(eArr.next().value); // [1, 20]
console.log(eArr.next().value); // [2, 30]
console.log(eArr.next().value); // [3, 40]
console.log(eArr.next().value); // [4, 50]


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

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung InternetNode.js
entriesChrome Full support 45Edge Full support 14Firefox Full support 37IE No support NoOpera Full support 36Safari No support NoWebView Android No support NoChrome Android Full support 45Firefox Android Full support 37Opera Android No support NoSafari iOS No support NoSamsung Internet Android Full support Yesnodejs Full support 0.12


Full support  
Full support
No support  
No support

See also