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JS中清空数组的方法
2022-08-02 00:14:00 【weixin_46051260】
1）splice
影响原数组
第一个参数：规定添加或删除元素的位置
第二个参数：要删除元素的数量
2）将长度直接设置为0
3）将数组赋值为[]
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