代码片段
去重1234567891011121314151617181920212223242526//第一种方法Array.prototype.unique = function () { //在原型上加方法 var res = []; var json = {}; for (var i = 0; i < this.length; i++) { if (!json[this[i]]) { //是否存在 res.push(this[i]); json[this[i]] = 1; //保存了 } } return res;};var arr = [112, 112, 34, "你好", 112, 112, 34, "你好", "str", "str1"];console.log(arr.unique()); //[112, 34, "你好", "str ...