var nameValue=$("#"+name+"DelFlag_"+id).attr("name"); 中的nameValue是一个字符串！并非boolean值
时间:2022-06-10
本文章向大家介绍var nameValue=$("#"+name+"DelFlag_"+id).attr("name"); 中的nameValue是一个字符串！并非boolean值，主要内容包括其使用实例、应用技巧、基本知识点总结和需要注意事项，具有一定的参考价值，需要的朋友可以参考一下。
困惑了两天的js，今天早上终于搞定了！
现在直接来正题....
先看看效果图：
下面是一个jsp..
1 <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
2 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
3 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
4 <html xmlns="http://www.w3.org/1999/xhtml">
5 <head>
6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
7 <title>无标题文档</title>
8 <link rel="stylesheet" href="${pageContext.request.contextPath}/css/admin/user/admin-userUI.css" charset="UTF-8" />
9 <script type="text/javascript" src="${pageContext.request.contextPath}/libs/My97DatePicker/WdatePicker.js" charset="UTF-8"></script>
10 </head>
11
12 <body>
13 <table width="100%" border="0" align="center" cellpadding="0" cellspacing="0">
14 <tr>
15 <td height="30">
16 <table width="100%" border="0" cellspacing="0" cellpadding="0">
17 <tr>
18 <td width="15" height="30"><img src="${pageContext.request.contextPath}/img/admin/backstage-img/tab_03.gif" width="15" height="30" /></td>
19 <td width="1101" background="${pageContext.request.contextPath}/img/admin/backstage-img/tab_05.gif"><img src="${pageContext.request.contextPath}/img/admin/backstage-img/311.gif" width="16" height="16" /> <span class="STYLE4">角色信息列表</span></td>
20 <td width="281" background="${pageContext.request.contextPath}/img/admin/backstage-img/tab_05.gif"></td>
21 <td width="14"><img src="${pageContext.request.contextPath}/img/admin/backstage-img/tab_07.gif" width="14" height="30" /></td>
22 </tr>
23 </table>
24 </td>
25 </tr>
26 <tr>
27 <td>
28 <table width="100%" border="0" cellspacing="0" cellpadding="0">
29 <tr>
30 <td width="9" background="${pageContext.request.contextPath}/img/admin/backstage-img/tab_12.gif"> </td>
31 <td bgcolor="#f3ffe3">
32 <table width="99%" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#c0de98" onmouseover="changeto()" onmouseout="changeback()">
33 <tr>
34 <td width="8%" height="18" background="${pageContext.request.contextPath}/img/admin/backstage-img/tab_14.gif" class="STYLE1">
35 <div align="center" class="STYLE2 STYLE1">
36 <form id="searchRoleForm" action="${pageContext.request.contextPath}/admin_role/admin-roleSearchList" method="post">
37 名称: <input type="text" id="searchValueId" name="role.name" style="width: 200px;" />
38 <input type="submit" id="roleSearchButton" value="搜索管理员" />
39 </form>
40 </div>
41 </td>
42 </tr>
43 </table>
44 </td>
45 <td width="9" background="${pageContext.request.contextPath}/img/admin/backstage-img/tab_16.gif"> </td>
46 </tr>
47 </table>
48 </td>
49 </tr>
50 <tr>
51 <td>
52 <table width="100%" border="0" cellspacing="0" cellpadding="0">
53 <tr>
54 <td width="9" background="${pageContext.request.contextPath}/img/admin/backstage-img/tab_12.gif"> </td>
55 <td bgcolor="#f3ffe3"><table width="99%" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#c0de98" onmouseover="changeto()" onmouseout="changeback()">
56 <tr>
57 <td width="8%" height="18" background="${pageContext.request.contextPath}/img/admin/backstage-img/tab_14.gif" class="STYLE1"><div align="center" class="STYLE2 STYLE1">序号</div></td>
58 <td width="8%" height="18" background="${pageContext.request.contextPath}/img/admin/backstage-img/tab_14.gif" class="STYLE1"><div align="center" class="STYLE2 STYLE1">名称</div></td>
59 <td width="8%" height="18" background="${pageContext.request.contextPath}/img/admin/backstage-img/tab_14.gif" class="STYLE1"><div align="center" class="STYLE2 STYLE1">注册时间</div></td>
60 <td width="8%" height="18" background="${pageContext.request.contextPath}/img/admin/backstage-img/tab_14.gif" class="STYLE1"><div align="center" class="STYLE2 STYLE1">状态</div></td>
61 <td width="8%" height="18" background="${pageContext.request.contextPath}/img/admin/backstage-img/tab_14.gif" class="STYLE1"><div align="center" class="STYLE2 STYLE1">操作</div></td>
62 </tr>
63 <c:choose>
64 <c:when test="${empty qr.results }">
65 <tr>
66 <td height="18" bgcolor="#FFFFFF" class="STYLE2"><div align="center" class="STYLE2 STYLE1">当前没有纪录</div></td>
67 </tr>
68 </c:when>
69 <c:otherwise>
70 <c:forEach items="${qr.results }" var="role">
71 <tr>
72 <td height="18" bgcolor="#FFFFFF" class="STYLE2"><div align="center" class="STYLE2 STYLE1">${role.id }</div></td>
73 <td height="18" bgcolor="#FFFFFF" class="STYLE2"><div align="center" class="STYLE2 STYLE1">${role.name }</div></td>
74 <td height="18" bgcolor="#FFFFFF"><div align="center" class="STYLE2 STYLE1">${role.registTime }</div></td>
75 <td height="18" bgcolor="#FFFFFF"><div align="center"><span class="STYLE2"><img id="roleDelFlag_${role.id }" name="${role.delFlag}" src="${pageContext.request.contextPath}/img/admin/backstage-img/${role.delFlag ? '010.gif' : '005.gif' }" width="9" height="9" /></span></div></td>
76 <td height="18" bgcolor="#FFFFFF"><div align="center"><span class="STYLE1">[</span><a href="${pageContext.request.contextPath}/admin_role/admin-roleUpdateUI?role.id=${role.id}">资料</a><span class="STYLE1">]|</span><span class="STYLE1">[</span><a id="roleDelFlagChange_${role.id }" href="javascript:void(0);" onclick="roleDelFlagChange(${role.id},'role');">${role.delFlag ? "启用" : "<font color='red'>禁用</font>" }</a><span class="STYLE1">]</span></div></td>
77 </tr>
78 </c:forEach>
79 </c:otherwise>
80 </c:choose>
81 </table></td>
82 <td width="9" background="${pageContext.request.contextPath}/img/admin/backstage-img/tab_16.gif"> </td>
83 </tr>
84 </table>
85 </td>
86 </tr>
87 <tr>
88 <td height="29"><table width="100%" border="0" cellspacing="0" cellpadding="0">
89 <tr>
90 <td width="15" height="29"><img src="${pageContext.request.contextPath}/img/admin/backstage-img/tab_20.gif" width="15" height="29" /></td>
91 <td background="${pageContext.request.contextPath}/img/admin/backstage-img/tab_21.gif"><table width="100%" border="0" cellspacing="0" cellpadding="0">
92 <tr>
93 <td width="25%" height="29" nowrap="nowrap"><span class="STYLE1">共<c:out value="${qr.count }" default="0"></c:out>条纪录 </span></td>
94 <td width="75%" valign="top" class="STYLE1"></td>
95 </tr>
96 </table></td>
97 <td width="14"><img src="${pageContext.request.contextPath}/img/admin/backstage-img/tab_22.gif" width="14" height="29" /></td>
98 </tr>
99 </table></td>
100 </tr>
101 </table>
102 <input type="hidden" id="basePath" value="${pageContext.request.contextPath}"/>
103
104 <script type="text/javascript" src="${pageContext.request.contextPath}/js/share/jquery-1.7.0.min.js" charset="UTF-8"></script>
105 <script type="text/javascript" src="${pageContext.request.contextPath}/js/admin/admin-public.js" charset="UTF-8"></script>
106 <script type="text/javascript">
107 function roleDelFlagChange(id,name){
108 var nameValue=$("#"+name+"DelFlag_"+id).attr("name");
109 if(id != "" || null != id){
110 var basePath=$("#basePath").val();
111 $.post("admin_"+name+"/admin-"+name+"DelFlagChange",{
112 "role.id" : id
113 },function(data){
114 if(data=="success"){
115 if(nameValue == "true"){
116 $("#"+name+"DelFlag_"+id).attr("src",basePath+"/img/admin/backstage-img/005.gif");
117 $("#"+name+"DelFlagChange_"+id).html("<font color='red'>禁用</font>");
118 $("#"+name+"DelFlag_"+id).attr("name","false");
119 }else if(nameVlue == "false"){
120 $("#"+name+"DelFlag_"+id).attr("src",basePath+"/img/admin/backstage-img/010.gif");
121 $("#"+name+"DelFlagChange_"+id).html("启用");
122 $("#"+name+"DelFlag_"+id).attr("name","true");
123 }
124 }
125 });
126 }
127 };
128 </script>
129 </body>
130 </html>在代码的第75,76行：
1 <td height="18" bgcolor="#FFFFFF"><div align="center"><span class="STYLE2"><img id="roleDelFlag_${role.id }" name="${role.delFlag}" src="${pageContext.request.contextPath}/img/admin/backstage-img/${role.delFlag ? '010.gif' : '005.gif' }" width="9" height="9" /></span></div></td>
2 <td height="18" bgcolor="#FFFFFF"><div align="center"><span class="STYLE1">[</span><a href="${pageContext.request.contextPath}/admin_role/admin-roleUpdateUI?role.id=${role.id}">资料</a><span class="STYLE1">]|</span><span class="STYLE1">[</span><a id="roleDelFlagChange_${role.id }" href="javascript:void(0);" onclick="roleDelFlagChange(${role.id},'role');">${role.delFlag ? "启用" : "<font color='red'>禁用</font>" }</a><span class="STYLE1">]</span></div></td>
3 图片img的id,name为下面所示：
1 id=roleDelFlag_${role.id } name=${role.delFlag }说明：delFlag是role对象的一个属性，类型为boolean。
在调用的js中：
1 <script type="text/javascript">
2 function roleDelFlagChange(id,name){
3 var nameValue=$("#"+name+"DelFlag_"+id).attr("name");
4 if(id != "" || null != id){
5 var basePath=$("#basePath").val();
6 $.post("admin_"+name+"/admin-"+name+"DelFlagChange",{
7 "role.id" : id
8 },function(data){
9 if(data=="success"){
10 if(nameValue == "true"){
11 $("#"+name+"DelFlag_"+id).attr("src",basePath+"/img/admin/backstage-img/005.gif");
12 $("#"+name+"DelFlagChange_"+id).html("<font color='red'>禁用</font>");
13 $("#"+name+"DelFlag_"+id).attr("name","false");
14 }else if(nameVlue == "false"){
15 $("#"+name+"DelFlag_"+id).attr("src",basePath+"/img/admin/backstage-img/010.gif");
16 $("#"+name+"DelFlagChange_"+id).html("启用");
17 $("#"+name+"DelFlag_"+id).attr("name","true");
18 }
19 }
20 });
21 }
22 };
23 </script>代码的第3行：
1 var nameValue=$("#"+name+"DelFlag_"+id).attr("name");中nameValue是一个字符串！并非boolean值，所以大家看到：
1 if(nameValue == "true"){
2 $("#"+name+"DelFlag_"+id).attr("src",basePath+"/img/admin/backstage-img/005.gif");
3 $("#"+name+"DelFlagChange_"+id).html("<font color='red'>禁用</font>");
4 $("#"+name+"DelFlag_"+id).attr("name","false");
5 }else if(nameVlue == "false"){
6 $("#"+name+"DelFlag_"+id).attr("src",basePath+"/img/admin/backstage-img/010.gif");
7 $("#"+name+"DelFlagChange_"+id).html("启用");
8 $("#"+name+"DelFlag_"+id).attr("name","true");
9 }第1行和第5行判断的是nameValue这个字符串是否为"true","false",
如果我们使用：
1 if(nameValue){
2 $("#"+name+"DelFlag_"+id).attr("src",basePath+"/img/admin/backstage-img/005.gif");
3 $("#"+name+"DelFlagChange_"+id).html("<font color='red'>禁用</font>");
4 $("#"+name+"DelFlag_"+id).attr("name","false");
5 }else {
6 $("#"+name+"DelFlag_"+id).attr("src",basePath+"/img/admin/backstage-img/010.gif");
7 $("#"+name+"DelFlagChange_"+id).html("启用");
8 $("#"+name+"DelFlag_"+id).attr("name","true");
9 }这样第1行，判断的是nameValue是一个对象。
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