jquery checkbox点选反选

     <script type="text/javascript">
     $(function(){
        //点选反选
        $("#check_all").click(function(){
            if($(this).attr("checked") == 'checked')
                $("input[name='id[]']").attr("checked",true);
            else
                $("input[name='id[]']").attr("checked",false);
        });            
     })     
     </script>

<input type="checkbox"  id="check_all"  >全选/反选

<input type="checkbox" name="id[]" value="" >1

<input type="checkbox" name="id[]" value="" >2

<input type="checkbox" name="id[]" value="" >3

<input type="checkbox" name="id[]" value="" >4