数组去重

数组去重

        {
            let arr = [1, 2, 1, 1, 3, 4, 5, 5, 5, 6];
            console.log([...new Set(arr)]);
        } {
            let arr = [1, 2, 1, 1, 3, 4, 5, 5, 5, 6];
            let newArr = arr.filter((item, index) => {
                return arr.indexOf(item) == index;
            });
            console.log(newArr);
        } {
            let arr = [1,2,1,1,3,4,5,5,5,6];
            let newArr = [];
            arr.forEach(item=>{
                if(!newArr.includes(item)){
                    newArr.push(item);
                }
            })
            console.log(newArr);
        }

数组去重

原文：https://www.cnblogs.com/jiaoyisen/p/14807235.html