Array.prototype.entries()

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since May 2018.

entries() 方法會回傳一個包含陣列中每一個索引之鍵值對(key/value pairs)的新陣列迭代器(Array Iterator)物件。

嘗試一下

語法

js
entries()

回傳值

一個新的 Array 迭代器物件。

範例

使用 for...of 進行迭代

js
var a = ["a", "b", "c"];
var iterator = a.entries();

for (let e of iterator) {
  console.log(e);
}
// [0, 'a']
// [1, 'b']
// [2, 'c']

規範

Specification
ECMAScript Language Specification
# sec-array.prototype.entries

瀏覽器相容性

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
entries

Legend

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Full support
Full support

參見