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JavaScript通过attachEvent和detachEvent方法处理带参数的函数

2014-06-09 21:56 [JavaScript] 来源于:
导读: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/

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/1999/xhtml">
3 <head>
4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
5 <title>无标题文档</title>
6 <script language="javascript">
7
8    var theP;  //P标签对象
9
10    var show=function(msg){  //直接定义 function show(msg) 效果是一样的
11        return function(){
12            alert(msg+" from show()");
13
14            if(window.addEventListener){  //FF etc.
15                 theP.removeEventListener("click", theP.show11, false);
16            }
17            else{ //IE
18                 theP.detachEvent("onclick", theP.show11);
19            }
20        }
21    }
22
23    var show2=function(msg){    //直接定义 function show2(msg) 效果是一样的
24        return function(){
25            alert(msg+" from show2()");
26        }
27    }
28
29    function showDef(){
30        alert("showDef()");
31
32         if(window.addEventListener){  //FF etc.
33              theP.removeEventListener("click", showDef, false);
34         }
35         else{ //IE
36              theP.detachEvent("onclick", showDef);
37         }
38    }
39
40    window.onload=function(){
41        theP=document.getElementById("pid");
42
43        theP.show11=show("可以detach的带参数方法");
44       
45        if(window.addEventListener) // not IE
46        {
47            //for FF.etc
48            theP.addEventListener("click", theP.show11, false);
49            theP.addEventListener("click", showDef, false);
50        }
51        else
52        {
53            //for IE
54            theP.attachEvent("onclick", theP.show11);
55            theP.attachEvent("onclick", show2('不能detach的带参数方法'));//区别于上一个,这里不能detach
56           
57            theP.attachEvent("onclick", showDef);  //无参数的方法直接写
58        }
59    }
60 </script>
61
62 </head>
63
64 <body >
65 <p >
66    <p id="pid">Click Me</p>
67 </p>
68 </body>
69 </html>

出处:http://www.cnblogs.com/Freeway/archive/2009/06/03/1495561.html

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