沙漠里的小蜜蜂 - ES6 Javascript 小技巧 的评论
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link: https://www.xcondor.cn/index.php/archives/222/
description: 1. 数组去重let arr = [1,2,3,4,5,2,323,2,5,3];? let uniqueArr = [...new Set(arr)];2. 缓存数组长度for (let i ...