js创建对象

//字面量 json

var student={

    id:10001,

    name:"张三",

    scores:[

        {subject:"html",score:90},

        {subject:"JS", score:90}

    ]

}

//function

function Student(id,name){

    this.id=id;

    this.name=name;

    this.scores=[

        {subject:"html",score:90},

        {subject:"JS", score:90}

    ]

}

Student.prototype.sex="男"

Student.prototype.eat=function(food){

    console.log("吃"+food)

}

//扩展

var stu=new Student(1000,"张三");

stu.eat("");

console.log(stu.sex)

//Object

var stu2=new Object();

stu2.id=1000;

stu2.name="张三";

stu2.scores=[

    {subject:"html",score:90},

    {subject:"JS", score:90}

]

function Student(id,name){

    this.id=id;

    this.name=name;

    this.scores=[

        {subject:"html",score:90},

        {subject:"JS", score:90}

    ],

    this.eat=function(food){

        console.log("吃"+food)

        return this

        //返回值

},

this.sleep=function(){

    console.log("睡")

    return this

    //返回值

  }

}

var stu=new Student(1001,"张三");

stu.eat("").sleep().eat("").sleep();//链式编程