filter() 数组去重
let arr = [1, 2, 2, 3, 4, 5, 5, 6];
let newArr = arr.filter((x, index,self)=>self.indexOf(x)===index)
console.log(newArr)
set()方法 数组去重
let arr = [1, 2, 2, 3, 4, 5, 5, 6];
// let a=new Set(arr); //也可以分开
let newArr =Array.from(new Set(arr))
// console.log([...a]) //数组去重
let newArr =[...(new Set(arr))]
console.log(newArr)
