js的数组every
时间: 2023-10-13 22:58:19 浏览: 79
js数组使用方法
JavaScript中的数组every方法是用于对数组中的每个元素进行判断的方法。它会对数组中的每个元素依次执行一个回调函数,直到找到一个使回调函数返回false的元素。如果找到了这样的元素,every方法会立即返回false,否则会返回true。回调函数只会对已经赋值的元素进行调用,不会对未赋值或被删除的元素进行调用。如果数组是空数组,则无论在什么条件下,every方法都会返回true。需要注意的是,every方法不会改变原数组。\[3\]
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