数组排序

var arr = [1, 25, 3, 22, 23, 26, 5, 5, 23];
        arr.sort(function(a, b) {
            return a - b;//从大到小b-a
        })
        console.log(arr); // [1, 3, 5, 5, 22, 23, 23, 25, 26]