题解 | #数组去重#
数组去重
https://www.nowcoder.com/practice/0b5ae9c4a8c546f79e2547c0179bfdc2
Array.prototype.uniq = function () { // 1.使用集合快速去重 <!-- return Array.from(new Set(this)) --> // 2.使用数组的includes函数进行判断去重 let set = [] this.forEach(item => { if(!set.includes(item)) { set.push(item) } }) return set }