CHECKBOX分组全选代码

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<!--CHECKBOX分组全选代码-->
<h4>CHECKBOX分组全选代码</h4>
<script language="javascript">
function CheckAll(obj,theid){
for (var i=0;i<obj.elements.length;i++){
var e=obj.elements[i];
if (e.cid==theid)e.checked=document.all[theid].checked;
}
}
</script>
<form name=myform>
<input type="checkbox" name="recname" value="a1" cid="a">a1
<input type="checkbox" name="recname" value="a2" cid="a">a2
<input type="checkbox" name="recname" value="a3" cid="a">a3
<input type="checkbox" name="recname" value="a_all" id="a" onclick="CheckAll(this.form,this.id)">a_all<br><br>
<!--//单击此checkbox选中上面三个checkbox--->

<input type="checkbox" name="recname" value="b1" cid="b">b1
<input type="checkbox" name="recname" value="b2" cid="b">b2
<input type="checkbox" name="recname" value="b3" cid="b">b3
<input type="checkbox" name="recname" value="b_all" id="b" onclick="CheckAll(this.form,this.id)">b_all<br><br>
<!--//单击此checkbox选中上面三个checkbox--->

<input type="checkbox" name="recname" value="c1" cid="c">c1
<input type="checkbox" name="recname" value="c2" cid="c">c2
<input type="checkbox" name="recname" value="c3" cid="c">c3
<input type="checkbox" name="recname" value="c_all" id="c" onclick="CheckAll(this.form,this.id)">c_all
<!--//单击此checkbox选中上面三个checkbox---></form>

 

转载于:https://www.cnblogs.com/ie421/archive/2008/07/29/1255638.html