全选js实现

<input type=‘checkbox‘ name=‘allSelect‘ onclick=‘sel(this)‘></input>

//有i个选择框
<input type=‘checkbox‘ name=‘isSelect‘ value=‘"+data[i].id+"‘ ></input>

<script type="text/javascript">			  
function sel(obj){
		 var a = document.getElementsByName(‘isSelect‘);
		 //alert(document.getElementsByName(‘isSelect‘).length);
		 for(var i = 0;i<a.length;i++){
			a[i].checked = obj.checked;
		}
 }
</script>