1 <!DOCTYPE html>
2 <html lang="en">
3 <head>
4 <meta charset="UTF-8">
5 <title>Document</title>
6
7 </head>
8 <body>
9 <ul>
10 <li><input type="checkbox" name="sports">aaaa</input></li>
11 <li><input type="checkbox" name="sports">aaaa</input></li>
12 <li><input type="checkbox" name="sports">aaaa</input></li>
13 <li><input type="checkbox" name="sports">aaaa</input></li>
14 <li><input type="checkbox" name="sports">aaaa</input></li>
15
16 </ul>
17 <script type="text/javascript">
18 var obj = document.getElementsByName('sports');
19
20 //下面是全選
21 function quanxuan()
22 {
23 for (var i = 0; i <= obj.length; i++) {
24 obj[i].checked=true;
25 }
26 }
27
28 //下面是反選
29 function fanxuan()
30 {
31 for (var i = 0; i <= obj.length; i++) {
32 if(obj[i].checked){
33 obj[i].checked=false;
34 }else {
35 obj[i].checked=true;
36 }
37 }
38 }
39 //下面是全不選
40 function quanbuxuan()
41 {
42 for (var i = 0; i <= obj.length; i++) {
43 obj[i].checked=false;
44 }
45 }
46
47
48
49 </script>
50 <a href="javascript:quanxuan()" >全選</a>
51 <a href="javascript:fanxuan()" >反選</a>
52 <a href="javascript:quanbuxuan()">全不選</a>
53 </body>
54 </html> 你要保守你心，勝過保守一切。
作者：劉俊濤的部落格
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