"use strict";
// (function(){})() 
(function () {
    class Money {
        constructor(name, num) {
            this.name = name;
            this.num = num;
        }
        say() {
            console.log("你好");
        }
    }
    /**
     * super
     * 如果子类要使用父类中属性
     * 子类的构造函数必须对父类的构造函数重新进行接受
     * 使用super
     */
    class A extends Money {
        constructor(name, num, age) {
            super(name, num);
            this.age = age;
        }
    }
    class B extends Money {
    }
    let a = new A('喜羊羊', 100, 18);
    let b = new B('灰太狼', 50);
    console.log(a, 'a');
    console.log(b, 'b');
})();