//类的定义

class Animal {

 //ES6中新型构造器

     constructor(name,age) {

     this.name = name;

     this.age=age;

 }

 //实例方法

 sayName() {

     console.log(this.name +' is ' + this.age);

 }

}

//类的继承

class Programmer extends Animal {

     constructor(name,age) {

     //直接调用父类构造器进行初始化

     super(name,age);

 }

 program() {

     console.log("I'm coding...");

  }

}

function AnimalTest(name,age) {

    this.name=name;

    this.age=age;

    this.sayName=function () { }

}

function ProgrammerTest(name,age) {

    AnimalTest.apply(this,arguments)

}

ProgrammerTest.prototype=Object.create(AnimalTest.prototype);

ProgrammerTest.prototype.constructor=ProgrammerTest;

var obj = {name:'JSLite.io'};

/**

 * 给document添加click事件监听，并绑定EventClick函数

 * 通过bind方法设置EventClick的this为obj，并传递参数p1,p2

 */

document.addEventListener('click',EventClick.bind(obj,'p1','p2'),false);

//当点击网页时触发并执行

function EventClick(a,b){

    console.log(

            this.name,

            a,

            b

    )

}