The entries() method returns a new Array Iterator object that contains the key/value pairs for each index in the array.
a.entries()
A new Array iterator object.
var a = ['a', 'b', 'c'];
var iterator = a.entries();
for (let e of iterator) {
console.log(e);
}
// [0, 'a']
// [1, 'b']
// [2, 'c']
| Specification | Status | Comment |
|---|---|---|
| ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'Array.prototype.entries' in that specification. | Standard | Initial definition. |
| ECMAScript Latest Draft (ECMA-262) The definition of 'Array.prototype.entries' in that specification. | Draft |
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | 38 | Yes | 28 | No | 25 | 8 |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | Opera Android | iOS Safari | Samsung Internet |
|---|---|---|---|---|---|---|---|
| Basic support | Yes | Yes | Yes | 28 | Yes | 8 | ? |
Array.prototype.keys()Array.prototype.values()Array.prototype.forEach()Array.prototype.every()Array.prototype.some()
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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/entries