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摘要: 修改于 2019-11-10 1 length:长度 <script> var arr = [1,2,3,4,5,6,7,8]; console.log(arr.length);//arr.length = 8; arr.length = 5;//给定数组长度; console.log(arr);/ 阅读全文
posted @ 2019-09-05 21:11 逝zxq 阅读(264) 评论(0) 推荐(0) 编辑