JavaScript设计模式-原型模式

 1 var Person=(function(){
 2     var personCount=0;
 3     function myPerson(name){
 4         this.name=name;
 5         personCount++;
 6         console.log(‘created new person,current person count:‘,personCount);
 7     }
 8 
 9     //静态属性，外部可通过Person.country直接访问，实例不可访问
10     myPerson.country=‘china‘;
11     myPerson.prototype={
12         //值类型，实例可修改，修改只影响当前实例
13         age:20,
14         //引用类型，实例可修改，修改会影响所有实例
15         address:{
16             province:‘四川‘,
17             city:‘成都‘
18         },
19         sayHello:function(){
20             console.log(‘hi,my name is ‘,this.name,‘,i am ‘,this.age);
21         },
22         myAddress:function(){
23             console.log(this.address.province,this.address.city);
24         }
25     };
26     return myPerson;
27 }());
28 
29 console.log(Person.country);
30 
31 var person1=new Person(‘zhangsan‘);
32 person1.sayHello();
33 var person2=new Person(‘lisi‘);
34 person2.sayHello();
35 
36 //修改值类型原型属性
37 person1.age=18;
38 person1.sayHello();
39 person2.sayHello();
40 
41 //修改引用类型原型属性
42 person1.myAddress();
43 person2.myAddress();
44 person1.address.city=‘巴中‘;
45 person1.myAddress();
46 person2.myAddress();