The initial value of the @@iterator property is the same function object as the initial value of the values
property.
Syntax
arr[Symbol.iterator]()
Return value
The array iterator function, which is the values()
function by default.
Examples
Iteration using for...of
loop
var arr = new Uint8Array([10, 20, 30, 40, 50]); // your browser must support for..of loop // and let-scoped variables in for loops for (let n of arr) { console.log(n); }
Alternative iteration
var arr = new Uint8Array([10, 20, 30, 40, 50]); var eArr = arr[Symbol.iterator](); console.log(eArr.next().value); // 10 console.log(eArr.next().value); // 20 console.log(eArr.next().value); // 30 console.log(eArr.next().value); // 40 console.log(eArr.next().value); // 50
Specifications
Specification | Status | Comment |
---|---|---|
ECMAScript 2015 (6th Edition, ECMA-262) The definition of '%TypedArray%.prototype[@@iterator]()' in that specification. |
Standard | Initial definition. |
ECMAScript 2017 Draft (ECMA-262) The definition of '%TypedArray%.prototype[@@iterator]()' in that specification. |
Draft |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | (Yes) | 36 (36) [1] | No support | No support | No support |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | No support | (Yes) | 36.0 (36) [1] | No support | No support | No support |
[1] From Gecko 17 (Firefox 17 / Thunderbird 17 / SeaMonkey 2.14) to Gecko 26 (Firefox 26 / Thunderbird 26 / SeaMonkey 2.23 / Firefox OS 1.2) the iterator
property was used (bug 907077), and from Gecko 27 to Gecko 35 the "@@iterator"
placeholder was used. In Gecko 36 (Firefox 36 / Thunderbird 36 / SeaMonkey 2.33), the @@iterator
symbol got implemented (bug 918828).