ES6数组去重

使用ES6的新语法对数组去重，相比ES5省去了排序再作双重For循环javascript (function() { 'use strict'; let arr = [1, '1', 2, '2', 3, '3', 3, '3', 2, '2', 1, '1']; let new_set = new Set(arr); let new_arr = Array.from(

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