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JavaScript数组keys迭代器用法
JavaScript的keys()方法可生成一个新数组迭代器,用于遍历数组中每个元素的索引。例如在需要获取数组索引的场景下非常实用。 1、 启动Eclipse,新建一个静态网页文件keys.html,具体操作所示。 2、 第二步,使用let声明一个数组keys,调用keys()方法,并输出next()方法 ...
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