ES6—45：子类对父类方法的重写

class Father {
    constructor(name,price) {
        this.name = name;
        this.price = price;
    };
    call() {
        console.log("手机可以打电话！");
    };
};
class Son extends Father {
    constructor(name,price,color,size) {
        super(name,price);
        this.color = color;
        this.size = size;
    };
    photo() {
        console.log("手机可以拍照");
    };
    call() {
        console.log("这是子类的函数");
    };
};
const xiaomi = new Son("红米K30","4999","荣耀黑","6.7英寸");
console.log(xiaomi);
xiaomi.call();