VIP32/ts/4.面向对象/dist/7.属性的封装.js

"use strict";
// 属性的封装：令属性更加安全
(function () {
    /**
     * readonly 只读
     * static
     * public 共有的
     * private 私有的 只能在当前类中访问及修改
     *  若想要更改 则需在类中定义方法
     * protected 受保护的 只能在当前累及当前类的子类中访问及使用
     */
    class Person {
        constructor(name1, age1) {
            this.age1 = age1;
            this.name1 = name1;
        }
        /**
         * 在属性的封装中
         * getter 获取属性值 get
         * setter 设置属性值 set
         */
        get name() {
            return this.name1;
        }
        set name(value) {
            this.name1 = value;
        }
        get age() {
            return this.age1;
        }
        set age(value) {
            if (value > 0) {
                this.age1 = value;
            }
        }
    }
    let p = new Person("孙悟空", 20);
    // p.name = "猪八戒";
    // p.age = 10;
    // console.log(p.getName());
    // console.log(p.setName("哈哈"));
    // console.log(p.setAge(-10))
    p.name = '小小';
    p.age = 1;
    console.log(p);
    console.log(p.name);
    // console.log(Person.age)
    // class A {
    //     public name: string;
    //     public age: number;
    //     constructor(name: string, age: number) {
    //         this.name = name;
    //         this.age = age;
    //     }
    // }
    // class A {
    //     constructor(public name:string,public age:number) {
    //         this.name = name
    //         this.age = age
    //     }
    // }
    class B {
        constructor(num) {
            this.num = num;
        }
    }
    class C extends B {
        say() {
            console.log(this.num);
        }
    }
    let c = new C(100);
    console.log(c);
    // C.num = 1;
})();