建立對象的方法

1、通過JSON建立對象

2、先new  Object，然後添加屬性和方法，缺點：會產生大量重複的代碼

var people = new OBject();people.name =  "aaaa";people.getName = function(){     alert('get the name:' +this.name);} 

3、通過對象字面量，缺點：會產生大量重複的代碼

var people = {    name: "aaaa",    getName: function(){        alert('get the name:'+this.name);    }}

4、原廠模式，缺點：不能識別對象的類型

function  createFunction(name){      var o = new Object();       o.name = name;       o.getName = function(){            alert('get the name: '+this.name);       }
       return o;}    

5、建構函式模式，缺點：不能實現方法的共用

function  People(name){     this.name = name;     this.getName = function(){          alert('get the name '+this.name);     }}

6、原型模式，缺點：有些屬性不需要共用

var Peopel = {}People.prototype = {    constructor:People,    name:"aaa",    getName:function(){         alert('the name is:' +this.name);          }}

7、組合使用建構函式模式和原型模式

function People(name){    this.name = name;}People.prototype = {    constructor:People;    getName: function(){         alert('the name is'+this.name);    }}

8、動態原型模式,這是一種較好的建立對象模式

1 function People(name){2      this.name = name;3      if(typeof this.getName != "function"){4            People.prototype.getName = function(){5                  alert('the name is:' +this.name);6            }7      }8 }