I volontari di MDN non hanno ancora tradotto questo articolo in Italiano. Unisciti a noi e traducilo tu stesso.
Puoi anche consultare l’articolo in English (US).

The values() method returns a new Array Iterator object that contains the values for each index in the array.

var a = ['w', 'y', 'k', 'o', 'p']; 
var iterator = a.values();

console.log(iterator.next().value); // w 
console.log(iterator.next().value); // y 
console.log(iterator.next().value); // k 
console.log(iterator.next().value); // o 
console.log(iterator.next().value); // p

Syntax

arr.values()

Return value

A new Array iterator object.

Examples

Iteration using for...of loop

var arr = ['w', 'y', 'k', 'o', 'p'];
var iterator = arr.values();

for (let letter of iterator) {
  console.log(letter);
}

Array.prototype.values is default implementation of Array.prototype[Symbol.iterator].

Array.prototype.values === Array.prototype[Symbol.iterator]      //true

TODO please write about why we need it, usecases.

Specifications

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

Browser compatibility

Update compatibility data on GitHub
DesktopMobileServer
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung InternetNode.js
Basic supportChrome Full support 66Edge Full support YesFirefox Full support 60IE No support NoOpera Full support 53Safari Full support 9WebView Android Full support 66Chrome Android Full support 66Edge Mobile Full support YesFirefox Android Full support 60Opera Android Full support 53Safari iOS Full support 9Samsung Internet Android No support Nonodejs Full support 10.9.0
Full support 10.9.0
Full support 6.5.0
Notes Disabled
Notes The --harmony-array-prototype-values flag is required; the --harmony flag is not sufficient in this case.
Disabled From version 6.5.0: this feature is behind the --harmony-array-prototype-values runtime flag.
No support 0.12 — 4.0.0

Legend

Full support  
Full support
No support  
No support
See implementation notes.
See implementation notes.
User must explicitly enable this feature.
User must explicitly enable this feature.

See also

Tag del documento e collaboratori

Ultima modifica di: anuragasaurus,