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。
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語法
a.entries()
回傳值
一個新的 Array
迭代器物件。
範例
使用 for…of 進行迭代
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
瀏覽器相容性
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
Desktop | Mobile | Server | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
entries | Chrome Full support 38 | Edge Full support 12 | Firefox Full support 28 | IE No support No | Opera Full support 25 | Safari Full support 8 | WebView Android Full support Yes | Chrome Android Full support 38 | Firefox Android Full support 28 | Opera Android Full support Yes | Safari iOS Full support 8 | Samsung Internet Android Full support Yes | nodejs Full support 0.12 |
Legend
- Full support
- Full support
- No support
- No support