js重新讲解继承，es5的一些继承，es6继承的改变 ?----------由浅入深

function Parent(name) { ???this.name = name}Parent.prototype.home = ‘北京‘;function Child() { ???this.age = 8;}//将父类的实例绑定在子类的原型上Child.prototype = new Parent(‘aa‘);//实例化原型let child = new Child();//这时候继承父类的公有私有属性console.log(child.home+child.name);// 结果 北京 + aa

function Parent(name) { ???this.name = name}//父类的公有属性Parent.prototype.home = ‘北京‘;function Child(name) { ???this.age = 8; ???Parent.call(this,...arguments);}let child = new Child(‘hello‘);console.log(child.home+child.name);//结果是 北京 +undefined

function Parent(name) { ???this.name = name}Parent.prototype.home = ‘北京‘;function Child() { ???this.age = 8;}Child.prototype = Object.create(Parent.prototype);let child = new Child();//这时候继承只继承父类的公有属性 父类的私有属性没有继承console.log(child.home+child.name);// 结果 北京 + indefined

class Person { ???//控制器 ???constructor(name,age){ ???????this.name=name; ???????this.age=age; ???} ???eat(){ ???????console.log("吃饭"); ???}}//只继承共有的//关键字 extends 公私有都会继承class Girl extends ?Person{ ???constructor(name,age){ ???????super(name,age); //默认调用父类，并且this就是girl实例 ???}}let g=new Girl(‘aa‘,18);console.log(g.name,g.age);g.eat();
//结果aa 18

//

吃饭

function Parent(name) { ???this.name = name}Parent.prototype.home = ‘北京‘;function Child() { ???this.age = 8;}// es5 里面判断数据类型// indexof// instanceof// constuctor// Object.prototype.toString.call//util 判断数据类型console.log(util.isArray({}));//继承使用util里的方法 inheritsutil.inherits(Child,Parent);