/*ES5使用class  继承*///方法对象function Car(options){	this.title = options.title;}//开车Car.prototype.drive = function(){	return "vromm"};//实例化const car1 = new Car({title:"事实上"});//继承function Toyota(options){	this.color = options.color;	Car.call(this,options);///重要	}Toyota.prototype = Object.create(Car.prototype);Toyota.prototype.constructor = Toyota;//Toyota 拥有 drive方法const toyota = new Toyota({color:'red',title:"focus"});toyota.drive();/*es6 class 继承 可以用于封装 */class Car {		constructor({title}) {//结构		this.title=  title;	}	drive(){		return "vroom";	}}const car = new Car({title:"bmw"})class Toyota extends Car{//extends Car 是继承	constructor(options) {		super(options);//继承		this.color = options.color;	}}const toyota = new Toyota({color:"red",title:"ficus"});