js实现全选
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>全选</title>
<style type="text/css">
.box{
height:200px;
width:80px;
border:1px solid #ccc;
border-radius:10px;
padding-left:5px;
}
#checkall{
margin-top:10px;
}
[name]{
margin-top:10px;
}
</style>
</head>
<body>
<script type="text/javascript">
function checkAll(){
var checkall,ite;
checkall=document.getElementById('checkall');
ite=document.getElementsByName('ite');
for(var i=0;i<ite.length;i++){
if(checkall.checked){
ite[i].checked=true;
}else{
ite[i].checked=false;
}}}
</script>
<div class="box">
<div>
<input type="checkbox" id="checkall" onclick="checkAll()" /><label for="checkall">全选</label>
</div>
<input type="checkbox" name="ite" />选项1<br />
<input type="checkbox" name="ite" />选项2<br />
<input type="checkbox" name="ite" />选项3<br />
<input type="checkbox" name="ite" />选项4<br />
<input type="checkbox" name="ite" />选项5<br />
<input type="checkbox" name="ite" />选项6<br />
</div>
</body>
</html>
