javascript 闭包理解

javascript 闭包理解

 1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 2 <html xmlns="http://www.w3.org/2000/xhtml">
 3     <head>
 4         <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 5         <title>*</title>
 6         <script src="jquery.min.js" language="javascript" type="text/javascript"></script>
 7         <script src="wkl_ajax.js" language="javascript" type="text/javascript"></script>
 8         <script type="text/javascript">
 9             function f(x, n) {//求幂
10                 var result = 1;
11                 for(var i = 0; i < n; i++) {
12                     result *= x;
13                 }
14                 return result;
15             }
16 
17             function currying(n) {
18                 return function(x) {
19                     return f(x, n);
20                 };
21             }
22 
23             var square = currying(2);
24             var cube = currying(3);
25 
26             alert(square(2));
27             //4
28             alert(cube(2));
29             //8
30         </script>
31     </head>
32     <body>
33         <div class="me">
34             test
35         </div>
36     </body>
37 </html>

 

posted @ 2017-05-31 10:00  GL_BKY  阅读(218)  评论(0)  编辑  收藏  举报