JavaScript数组的sort方法常规用法

// 对普通数组进行排序
        let nums = [1, 3, 4, -4, 2, 5, 1];
        nums.sort(function (a, b) {
            // 升序
            // return a - b;
            //降序
            return b - a;
        });
        console.log(nums);

        // 对字符串数组进行排序
        let arr = ["asd", "as", "a", "asdf"];
        arr.sort(function (str1, str2) {
            // 升序
            // return str1.length - str2.length;

            //降序
            return str2.length - str1.length;

        });
        console.log(arr);

        // 对对象数组进行排序
        let students = [
            {name: "zs", age: 12},
            {name: "ls", age: 7},
            {name: "ww", age: 30},
            {name: "zl", age: 10},
        ];
        students.sort(function (stu1, stu2) {
           // return stu1.age - stu2.age;
           return stu2.age - stu1.age;
        });
        console.log(students);