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javascript entries() 方法

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2016-06-01 09:54:243153browse

<strong>entries()</strong> 方法返回一个 <strong>Array Iterator</strong> 对象,该对象包含数组中每一个索引的键值对。

<strong>entries()基本语法:</strong>

<code class="language-javascript">arr.entries()</code>

 

<strong>entries()参数说明:</strong>

参数名 参数说明
arr 需要处理的数组

 

<strong>entries()实例:</strong>

<code class="language-javascript">var arr = ["a", "b", "c"];
var eArr = arr.entries();

console.log(eArr.next().value); // [0, "a"]
console.log(eArr.next().value); // [1, "b"]
console.log(eArr.next().value); // [2, "c"]</code>

 

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