weixin_45214116的博客

var arr = [1, 2, 2,3,4,4,5,5,6,6,7,8]//第一种 var newArr = Array.from(new Set(arr));//第二种 var att = [...new Set(arr)]; //第三种 var newarr = []; for (var i = 0; i < arr.length; i++) { if (newarr.indexOf(arr[i]) < 0) { newarr.p...