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=gb2312" />
5<title>简单JS全选、反选代码 - www.webdm.cn</title>
6
<script>
7
function CheckAll(value,obj) {
8
var form=document.getElementsByTagName("form")
9 for(var i=0;i<form.length;i++){
10 for (var j=0;j<form[i].elements.length;j++){
11 if(form[i].elements[j].type=="checkbox"){
12 var e = form[i].elements[j];
13 if (value=="selectAll"){e.checked=obj.checked}
14 else{e.checked=!e.checked;}
15
}
16 }
17 }
18
}
19</script>
20</head>
21<body>
22<form name="form1" method="post" action="">
23<input name="id" type="checkbox" id="id" value="1">
24<input name="id" type="checkbox" id="id" value="2">
25<input name="id" type="checkbox" id="id" value="3">
26</form>
27<form name="form2" method="post" action="">
28<input name="id" type="checkbox" id="id" value="4">
29<input name="id" type="checkbox" id="id" value="5">
30<input name="id" type="checkbox" id="id" value="6">
31</form>
32<INPUT onclick=CheckAll('selectAll',this) type=checkbox value=on name=chkall>
33全选
34<input type="checkbox" name="invest" value="checkbox" onClick="CheckAll()">
35反选
36</body>
37</html>