jQuery-实现全选与反选

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>用iQuery实现全选与反选</title>
</head>
 <!--script src="1、jquery实现图片轮播示例/js/jquery-1.11.3/jquery.min.js"></script-->
 <script src="http://code.jquery.com/jquery-1.7.2.min.js"></script>
 <script type="text/javascript">
   $(document).ready(function() {

     $("#checkedAll").click(function(){

          if($(this).attr("checked")){   //全选

              $("input[name='checkbox_name']").each(function (){
                   $(this).attr("checked",true);
                  });
              }
            else{   //取消全选
                $("input[name='checkbox_name']").each(function (){
                $(this).attr("checked",false);
            });

                }
         });
});
 </script>
<body>
  <input type="checkbox" name="checkbox_name" id="checkbox_name_1"/><br/>
  <input type="checkbox" name="checkbox_name" id="checkbox_name_2"/><br/>
  <input type="checkbox" name="checkbox_name" id="checkbox_name_3"/><br/>
  <input type="checkbox" name="checkbox_name" id="checkbox_name_4"/><br/>
  <input type="checkbox" name="checkboxAll" id="checkedAll"/>全选/取消全选
</body>
</html>