JS高级---借用构造函数

    function Person(name, age, sex, weight) {
      this.name = name;
      this.age = age;
      this.sex = sex;
      this.weight = weight;
    }
    Person.prototype.sayHi = function () {
      console.log("您好");
    };
    function Student(name, age, sex, weight, score) {
      //借用构造函数
      Person.call(this, name, age, sex, weight);
      this.score = score;
    }
    var stu1 = new Student("小明", 10, "男", "10kg", "100");
    console.log(stu1.name, stu1.age, stu1.sex, stu1.weight, stu1.score);

    var stu2 = new Student("小红", 20, "女", "20kg", "120");
    console.log(stu2.name, stu2.age, stu2.sex, stu2.weight, stu2.score);

    var stu3 = new Student("小丽", 30, "妖", "30kg", "130");
    console.log(stu3.name, stu3.age, stu3.sex, stu3.weight, stu3.score);