参考网址：http://bijian1013.iteye.com/blog/2255037

jQuery.extend() 函数用于将一个或多个对象的内容合并到目标对象。



注意：1. 如果只为$.extend()指定了一个参数，则意味着参数target被省略。此时，target就是jQuery对象本身。通过这种方式，我们可以为全局对象jQuery添加新的函数。
2. 如果多个对象具有相同的属性，则后者会覆盖前者的属性值。


 




 <!DOCTYPE html>

 <html lang="en">

 <head>

     <meta charset="UTF-8">

     <title>$.extend()浅拷贝深拷贝</title>

     <script src="http://apps.bdimg.com/libs/jquery/1.8.1/jquery.min.js"></script>

 </head>

 <body>

 <!--参考网址：http://bijian1013.iteye.com/blog/2255037-->

 <script type="text/javascript">

     $(function () {

         var list = function () {

             this.a = {

                 name : 'zhangshan',

                 age : 28,

                 company : {

                     name : '腾讯',

                     address : '深圳',

                     size : 10000

                 }

             };

             this.b={

                 name : 'lisi',

                 age : 30,

                 company : {

                     name : '阿里巴巴',

                     address : '杭州'

                 },

                 stature : '172cm'

             };

             this.show = function (c) {

                 console.log('a:' + JSON.stringify(this.a));

                 console.log('b:' + JSON.stringify(this.b));

                 console.log('c:' + JSON.stringify(c));

                 console.log('\n')

             }

         };

         /*浅拷贝*/

         q1();

         q2();

         q3();

         /*深拷贝*/

         s1();

         s2();

         s3();

         s4();

         function q1() {

             var q1 = new list;

             var c = $.extend(q1.a,q1.b);

             q1.show(c);

 //            a:{"name":"lisi","age":30,"company":{"name":"阿里巴巴","address":"北京"},"stature":"172cm"}

 //            b:{"name":"test","age":30,"company":{"name":"阿里巴巴","address":"北京"},"stature":"172cm"}

 //            c:{"name":"lisi","age":30,"company":{"name":"阿里巴巴","address":"北京"},"stature":"172cm"}

         };

         function q2() {

             var q2 = new list;

             var c = $.extend(q2.a,q2.b);

             q2.b.name = 'test';

             q2.b.company.address = '北京';

             q2.show(c);

 //            a:{"name":"lisi","age":30,"company":{"name":"阿里巴巴","address":"北京"},"stature":"172cm"}

 //            b:{"name":"test","age":30,"company":{"name":"阿里巴巴","address":"北京"},"stature":"172cm"}

 //            c:{"name":"lisi","age":30,"company":{"name":"阿里巴巴","address":"北京"},"stature":"172cm"}

         };

         function q3() {

             var q3 = new list;

             var c = $.extend({},q3.a,q3.b);

             q3.show(c);

 //            a:{"name":"zhangshan","age":28,"company":{"name":"腾讯","address":"深圳","size":10000}}

 //            b:{"name":"lisi","age":30,"company":{"name":"阿里巴巴","address":"杭州"},"stature":"172cm"}

 //            c:{"name":"lisi","age":30,"company":{"name":"阿里巴巴","address":"杭州"},"stature":"172cm"}

         };

         function s1() {

             var s1 = new list;

             var c = $.extend(true,s1.a,s1.b);

             s1.show(c);

 //            a:{"name":"lisi","age":30,"company":{"name":"阿里巴巴","address":"杭州","size":10000},"stature":"172cm"}

 //            b:{"name":"lisi","age":30,"company":{"name":"阿里巴巴","address":"杭州"},"stature":"172cm"}

 //            c:{"name":"lisi","age":30,"company":{"name":"阿里巴巴","address":"杭州","size":10000},"stature":"172cm"}

         };

         function s2() {

             var s2 = new list;

             var c = $.extend(true,s2.a,s2.b);

             s2.b.name = 'test';

             s2.b.company.address = '北京';

             s2.show(c);

 //            a:{"name":"lisi","age":30,"company":{"name":"阿里巴巴","address":"杭州","size":10000},"stature":"172cm"}

 //            b:{"name":"test","age":30,"company":{"name":"阿里巴巴","address":"北京"},"stature":"172cm"}

 //            c:{"name":"lisi","age":30,"company":{"name":"阿里巴巴","address":"杭州","size":10000},"stature":"172cm"}

         };

         function s3() {

             var s3 = new list;

             var c = $.extend(true,{},s3.a,s3.b);

             s3.show(c);

 //            a:{"name":"zhangshan","age":28,"company":{"name":"腾讯","address":"深圳","size":10000}}

 //            b:{"name":"lisi","age":30,"company":{"name":"阿里巴巴","address":"杭州"},"stature":"172cm"}

 //            c:{"name":"lisi","age":30,"company":{"name":"阿里巴巴","address":"杭州","size":10000},"stature":"172cm"}

         };

         function s4() {

             var s4 = new list;

             var c = $.extend(true,{},s4.a,s4.b);

             s4.a.name = 'zhangshan01';

             s4.b.name = 'lisi01';

             s4.b.company.address = 'shengzhen';

             s4.show(c);

 //            a:{"name":"zhangshan01","age":28,"company":{"name":"腾讯","address":"深圳","size":10000}}

 //            b:{"name":"lisi01","age":30,"company":{"name":"阿里巴巴","address":"shengzhen"},"stature":"172cm"}

 //            c:{"name":"lisi","age":30,"company":{"name":"阿里巴巴","address":"杭州","size":10000},"stature":"172cm"}

         };

     })

 </script>

 </body>

 </html>


												


												


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