jquery实现全选、全不选、反选操作

时间：2022-07-12 13:15:43
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

 <html>

 <head>

     <title>新建网页</title>

     <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>

     <meta name="description" content=""/>

     <meta name="keywords" content=""/>

     <script type="text/javascript" src="../jquery-1.4.4.js" ></script>

     <script type="text/javascript">

         function selAll(){

             $(".ho").attr('checked',true);

         }

         function selAllNot(){

             $(".ho").attr('checked',false);

         }

         function selFan(){

             //反选操作

             //获得全部复选框、遍历、判断当前选中情况

             for(var i=0; i<$(".ho").length; i++){

                 var flag = $(".ho:eq("+i+")").attr("checked");

                 $(".ho:eq("+i+")").attr("checked",!flag);

             }

         }

     </script>

 </head>

 <body>

 <h2>复选框操作</h2>

 <input type="checkbox" name="hobby[]" id="hobbya" class="ho" value='a'>篮球

 <input type="checkbox" name="hobby[]" id="hobbyb" class="ho" value='b'>足球

 <input type="checkbox" name="hobby[]" id="hobbyc" class="ho" value='c'>登山

 <input type="checkbox" name="hobby[]" id="hobbyd" class="ho" value='d'>排球

 <br /><br />

 <input type="button" value="全选" onclick="selAll()" />

 <input type="button" value="全不选" onclick="selAllNot()" />

 <input type="button" value="反选" onclick="selFan()" />

 </body>

 </body>

 </html>

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