js—去除重复的数
方法一:
let arr =[1,2,2,2,3,4,5,5,6,6,7,8];let newArr = []outer :for (let i=0;i
方法二,用indexof:
let arr =[1,2,2,2,3,4,5,5,6,6,7,8];let a=[]for(let i=0;i
用include去重:
let arr =[1,2,2,2,3,4,5,5,6,6,7,8,2];let a=[]for(let i=0;i
用集合去重:
let arr =[1,2,2,2,3,4,5,5,6,6,7,8,2];let s1=new Set(arr)console.log(s1)let arr2=[...s1]console.log(arr2)