一、创建对象
1.1初始化器
var any={ name:"some", age:10, action:function(){ alert(this.name+":"+this.age); } };
1.2构造方法
function some(name,age){ this.name=name; this.age=age; this.action=function(){ alert(this.name+":"+this.age); } } var aa = new some("bb",5); aa.action();
1.3属性
function C(){ this.objPro = "对象属性"; C.prototype.objPro2="对象属性2"; var privateObj = "私有属性"; } C.classPro = "类属性";
1.4对象方法
function C(){ var privateFun = function(){ alert("私有方法"); } this.objFun = function(){ alert("对象方法"); } this.prototype.objFun = function(){ alert("对象方法"); } } C.classFun = function(){ alert("类方法"); }
二、封装
var any={ name:"some", age:10, action:function(){ alert(this.name+":"+this.age); } };
三、继承
3.1Dog还是Dog
function Animal(name,age){ } function Dog(name,age){ Animal.apply(this,[name,age]); }
3.2Dog变成Animal了
function Animal(name,age){ } function Dog(name,age){ Animal.apply(this,[name,age]); } Dog.prototype=new Animal();
四、多态
function Animal(name,age){ this.say=function(){ } } function Dog(name,age){ this.say=function(){ } } Dog.prototype = new Animal(); function Cat(name,age){ this.say=function(){ } } Cat.prototype = new Animal(); function say(){ if(animal instanceof Animal){ animal.say(); } }
时间: 2024-09-29 15:32:48