JQuery 多属性选择节点

JQuery 1.6.0+以后用prop()代替attr();

多属性选择节点

 $("input[type=checkbox][name='first2'][value='first4']")。

 <%@ page language="java" contentType="text/html; charset=UTF-8"
     pageEncoding="UTF-8"%>
 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 <html>
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>Insert title here</title>
 <script type="text/javascript" src="js/jquery-2.2.3.js"></script>

 <script type="text/javascript">
 <!--

 //-->
 function first(){
     var checked = $("input[type=checkbox][name='first2'][value='first4']").prop("checked");
     if(checked == true){
         $("input[type=checkbox][name='first2'][value='first4']").prop("checked", false);
     }else{
         $("input[type=checkbox][name='first2'][value='first4']").prop("checked", true);
     }
 }

 </script>
 </head>
 <body>
 <input type="checkbox" id="first1" name="first2" title="first3" value="first4"/>
 <input type="button" id="button" onclick="first()" value="提交"/>
 </body>
 </html>