Summary of basic JavaScript knowledge (11) Objects and packaging classes

系统自带new object(),array;number();boolean();String;date()

var my = {    name : "Mrcheng",    age : "18",    sex : "male",    health : 100;
    bike : function(){        console.log("I ride a bike every day");
        my.health++;
    },    drink : function(){        console.log("I don't drink");        this.health--;
    },    health : 100;
    }//my.bike叫函数的引用//my.bike()叫执行函数//对象的增my.girlfriend = "No";//对象的删除delete my.health//对象的修改my.health = 200;//对象的查看my.bike

1. var obj = {} plainObject  //对象字面量/对象直接量2.构造函数    1) 系统自带的构造函数 Object()...    2) 自定义//系统自带的    var obj = new Object();var obj = {};//两种方式一样//第一种方式怎么加属性和第二种一样obj.name = 'my';//自定义function Person(){
};var person1 = new Person();//通过关键字new操作符,才可以构造个对象出来//构造函数命名用大驼峰式
//自定义function Car(color){    this.color = color    this.name = 'BMW',    this.height = '1400',    this.lang = '4900',    this.weight = 1000,    this.health = 100,    this.run = function(){        this.health --;
    }
};var car = new Car("red");var car1 = new Car("green");
car1.name = "Maserati";//car1.name打印出"Maserati"//car.name打印出'BMW'