The initial value of the @@iterator
property is the same function object as the initial value of the values
property.
mySet[Symbol.iterator]
The Set
iterator function, which is the values()
function by default.
[@@iterator]()
var mySet = new Set(); mySet.add('0'); mySet.add(1); mySet.add({}); var setIter = mySet[Symbol.iterator](); console.log(setIter.next().value); // "0" console.log(setIter.next().value); // 1 console.log(setIter.next().value); // Object
[@@iterator]()
with for..of
var mySet = new Set(); mySet.add('0'); mySet.add(1); mySet.add({}); for (var v of mySet) { console.log(v); }
Specification | Status | Comment |
---|---|---|
ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'Set.prototype[@@iterator]' in that specification. | Standard | Initial definition. |
ECMAScript Latest Draft (ECMA-262) The definition of 'Set.prototype[@@iterator]' in that specification. | Draft |
Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic support | Yes | Yes |
17 — 271 364 |
No | Yes | Yes |
Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | Opera Android | iOS Safari | Samsung Internet |
---|---|---|---|---|---|---|---|
Basic support | Yes | Yes | Yes |
17 — 271 364 |
Yes | Yes | ? |
1. Supported as iterator
.
2. A placeholder property named @@iterator
is used.
3. Supported as @@iterator
.
4. The @@iterator
symbol is implemented.
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set/@@iterator