关于javascript:class继承

<!--js文件--><!--class继承类-->class People{    constructor(name,age){        this.name = name;        this.age = age;    },    sayHide(){        console.log(        `姓名：${this.name},年龄 ${this.age}`        )    }}<!--通过类 new 一个实例/对象-->const xiaoming = new People('xiaoming','19');xiaoming.sayHide();class Student extends People{    constructor(name,number){        super(name);        this.number = number;    },}const wang = new People('wang',1);