js设计模式与开发实践5

如何用es6创建类和如何继承：

class Animal{    constructor(name){        this.name=name;    };    getName(){        return this.name;    }}class Dog extends Animal{    constructor(name){        super(name);    }    speak(){        return "woof"    }}var dog=new Dog("Scamp");console.log(dog.getName()+" says "+dog.speak());