对象

属性：增，删，改，查

var  deng ={
        prepareWife: 'xiaowang',
        name:'laodeng',
        sex:'male',
        gf:'xiaoliu',
        wife:'',
        divorce: function(){
                delete this.wife;
                this.gf = this.prepareWife;
},
        getMarried :function(){
                  this.wife =this.gf;
},
changePrepareWife:function(someone){
                 this.prepareWife = someone;
},
}

对象的创建方法

1）对象直接量var obj = {}
2)构造函数
①系统自带的构造函数 var obj = new Object();
②自定义 var obj ={}

var obj = new Object{};
obj.name = 'abc';
obj.sex='male';

构造函数

大驼峰命名规则

function Car(){
      this.name = 'BWM';
      this.height = '1400';
      this.length = '4900';
      this.run = function(){
            this.length--;
        }
}
var car = new Car();
var car1 = new Car();
car.name = 'abc';
car1.name = '123';

可传参

function Student(name,age,sex){
    this.name = name;
    this.age = age;
    this.sex = sex;
    this.grade = 2017;
    
}

var student =new Stedent('zhangsan',18,'male');