Javascript 突出显示菜单栏上的活动菜单项

我正在使用下面的css作为我的菜单项。我需要突出显示菜单栏中的活动页面。有人能纠正css吗。或者我可以使用javascript或某种类型的脚本来实现吗

#menu ul {
margin: 0;
padding: 7px 6px 0;
background: #b6b6b6 url('/Images/Overlay.png') repeat-x 0 -110px;
line-height: 100%;
border-radius: 1em;
font: normal 0.5333333333333333em Arial, Helvetica, sans-serif;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
width 100%;
}
#menu li {
margin: 0 5px;
padding: 0 0 8px;
float: left;
position: relative;
list-style: none;
}
#menu a,
#menu a:link {
font-weight: bold;
font-size: 16px;
color: #444444;
text-decoration: none;
display: block;
padding: 8px 20px;
margin: 0;
border-radius: 5px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}
#menu a:hover {
background: #000;
color: #fff;
}
#menu .active a,
#menu li:hover > a {
background: #bdbdbd url('/Images/Overlay.png') repeat-x 0 -40px;
background: #666666 url('/Images/Overlay.png') repeat-x 0 -40px;
color: #444;
border-top: solid 1px  #f8f8f8;
-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
text-shadow: 0 1px 0 #ffffff;
}
#menu ul ul li:hover a,
#menu li:hover li a {
background: none;
border: none;
color: #666;
-webkit-box-shadow: none;
-moz-box-shadow: none;
}
#menu ul ul a:hover {
background: #7d7d7d url('/Images/Overlay.png') repeat-x 0 -100px !important;
color: #fff !important;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
#menu li:hover > ul {
display: block;
}
#menu ul ul {
display: none;
margin: 0;
padding: 0;
width: 185px;
position: absolute;
top: 40px;
left: 0;
background: url('/Images/Overlay.png') repeat-x 0 0;
border: solid 1px #b4b4b4;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
#menu ul ul li {
float: none;
margin: 0;
padding: 3px;
}
#menu ul ul a,
#menu ul ul a:link {
font-weight: normal;
font-size: 12px;
}
#menu ul:after {
content: '.';
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}

*html#菜单ul{ 身高：1%； }

#menu ul {
margin: 0;
padding: 7px 6px 0;
background: #b6b6b6 url('/Images/Overlay.png') repeat-x 0 -110px;
line-height: 100%;
border-radius: 1em;
font: normal 0.5333333333333333em Arial, Helvetica, sans-serif;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
width 100%;
}
#menu li {
margin: 0 5px;
padding: 0 0 8px;
float: left;
position: relative;
list-style: none;
}
#menu a,
#menu a:link {
font-weight: bold;
font-size: 16px;
color: #444444;
text-decoration: none;
display: block;
padding: 8px 20px;
margin: 0;
border-radius: 5px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}
#menu a:hover {
background: #000;
color: #fff;
}
#menu .active a,
#menu li:hover > a {
background: #bdbdbd url('/Images/Overlay.png') repeat-x 0 -40px;
background: #666666 url('/Images/Overlay.png') repeat-x 0 -40px;
color: #444;
border-top: solid 1px  #f8f8f8;
-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
text-shadow: 0 1px 0 #ffffff;
}
#menu ul ul li:hover a,
#menu li:hover li a {
background: none;
border: none;
color: #666;
-webkit-box-shadow: none;
-moz-box-shadow: none;
}
#menu ul ul a:hover {
background: #7d7d7d url('/Images/Overlay.png') repeat-x 0 -100px !important;
color: #fff !important;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
#menu li:hover > ul {
display: block;
}
#menu ul ul {
display: none;
margin: 0;
padding: 0;
width: 185px;
position: absolute;
top: 40px;
left: 0;
background: url('/Images/Overlay.png') repeat-x 0 0;
border: solid 1px #b4b4b4;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
#menu ul ul li {
float: none;
margin: 0;
padding: 3px;
}
#menu ul ul a,
#menu ul ul a:link {
font-weight: normal;
font-size: 12px;
}
#menu ul:after {
content: '.';
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}

这不能仅通过css完成。您需要使用一些jQuery或PHP向当前页面链接添加一个活动类，然后通过css对其进行样式设置

#menu ul {
margin: 0;
padding: 7px 6px 0;
background: #b6b6b6 url('/Images/Overlay.png') repeat-x 0 -110px;
line-height: 100%;
border-radius: 1em;
font: normal 0.5333333333333333em Arial, Helvetica, sans-serif;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
width 100%;
}
#menu li {
margin: 0 5px;
padding: 0 0 8px;
float: left;
position: relative;
list-style: none;
}
#menu a,
#menu a:link {
font-weight: bold;
font-size: 16px;
color: #444444;
text-decoration: none;
display: block;
padding: 8px 20px;
margin: 0;
border-radius: 5px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}
#menu a:hover {
background: #000;
color: #fff;
}
#menu .active a,
#menu li:hover > a {
background: #bdbdbd url('/Images/Overlay.png') repeat-x 0 -40px;
background: #666666 url('/Images/Overlay.png') repeat-x 0 -40px;
color: #444;
border-top: solid 1px  #f8f8f8;
-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
text-shadow: 0 1px 0 #ffffff;
}
#menu ul ul li:hover a,
#menu li:hover li a {
background: none;
border: none;
color: #666;
-webkit-box-shadow: none;
-moz-box-shadow: none;
}
#menu ul ul a:hover {
background: #7d7d7d url('/Images/Overlay.png') repeat-x 0 -100px !important;
color: #fff !important;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
#menu li:hover > ul {
display: block;
}
#menu ul ul {
display: none;
margin: 0;
padding: 0;
width: 185px;
position: absolute;
top: 40px;
left: 0;
background: url('/Images/Overlay.png') repeat-x 0 0;
border: solid 1px #b4b4b4;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
#menu ul ul li {
float: none;
margin: 0;
padding: 3px;
}
#menu ul ul a,
#menu ul ul a:link {
font-weight: normal;
font-size: 12px;
}
#menu ul:after {
content: '.';
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}

检查这些

#menu ul {
margin: 0;
padding: 7px 6px 0;
background: #b6b6b6 url('/Images/Overlay.png') repeat-x 0 -110px;
line-height: 100%;
border-radius: 1em;
font: normal 0.5333333333333333em Arial, Helvetica, sans-serif;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
width 100%;
}
#menu li {
margin: 0 5px;
padding: 0 0 8px;
float: left;
position: relative;
list-style: none;
}
#menu a,
#menu a:link {
font-weight: bold;
font-size: 16px;
color: #444444;
text-decoration: none;
display: block;
padding: 8px 20px;
margin: 0;
border-radius: 5px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}
#menu a:hover {
background: #000;
color: #fff;
}
#menu .active a,
#menu li:hover > a {
background: #bdbdbd url('/Images/Overlay.png') repeat-x 0 -40px;
background: #666666 url('/Images/Overlay.png') repeat-x 0 -40px;
color: #444;
border-top: solid 1px  #f8f8f8;
-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
text-shadow: 0 1px 0 #ffffff;
}
#menu ul ul li:hover a,
#menu li:hover li a {
background: none;
border: none;
color: #666;
-webkit-box-shadow: none;
-moz-box-shadow: none;
}
#menu ul ul a:hover {
background: #7d7d7d url('/Images/Overlay.png') repeat-x 0 -100px !important;
color: #fff !important;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
#menu li:hover > ul {
display: block;
}
#menu ul ul {
display: none;
margin: 0;
padding: 0;
width: 185px;
position: absolute;
top: 40px;
left: 0;
background: url('/Images/Overlay.png') repeat-x 0 0;
border: solid 1px #b4b4b4;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
#menu ul ul li {
float: none;
margin: 0;
padding: 3px;
}
#menu ul ul a,
#menu ul ul a:link {
font-weight: normal;
font-size: 12px;
}
#menu ul:after {
content: '.';
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}

#menu ul {
margin: 0;
padding: 7px 6px 0;
background: #b6b6b6 url('/Images/Overlay.png') repeat-x 0 -110px;
line-height: 100%;
border-radius: 1em;
font: normal 0.5333333333333333em Arial, Helvetica, sans-serif;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
width 100%;
}
#menu li {
margin: 0 5px;
padding: 0 0 8px;
float: left;
position: relative;
list-style: none;
}
#menu a,
#menu a:link {
font-weight: bold;
font-size: 16px;
color: #444444;
text-decoration: none;
display: block;
padding: 8px 20px;
margin: 0;
border-radius: 5px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}
#menu a:hover {
background: #000;
color: #fff;
}
#menu .active a,
#menu li:hover > a {
background: #bdbdbd url('/Images/Overlay.png') repeat-x 0 -40px;
background: #666666 url('/Images/Overlay.png') repeat-x 0 -40px;
color: #444;
border-top: solid 1px  #f8f8f8;
-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
text-shadow: 0 1px 0 #ffffff;
}
#menu ul ul li:hover a,
#menu li:hover li a {
background: none;
border: none;
color: #666;
-webkit-box-shadow: none;
-moz-box-shadow: none;
}
#menu ul ul a:hover {
background: #7d7d7d url('/Images/Overlay.png') repeat-x 0 -100px !important;
color: #fff !important;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
#menu li:hover > ul {
display: block;
}
#menu ul ul {
display: none;
margin: 0;
padding: 0;
width: 185px;
position: absolute;
top: 40px;
left: 0;
background: url('/Images/Overlay.png') repeat-x 0 0;
border: solid 1px #b4b4b4;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
#menu ul ul li {
float: none;
margin: 0;
padding: 3px;
}
#menu ul ul a,
#menu ul ul a:link {
font-weight: normal;
font-size: 12px;
}
#menu ul:after {
content: '.';
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}

---

必须发生两件基本的事情：

#menu ul {
margin: 0;
padding: 7px 6px 0;
background: #b6b6b6 url('/Images/Overlay.png') repeat-x 0 -110px;
line-height: 100%;
border-radius: 1em;
font: normal 0.5333333333333333em Arial, Helvetica, sans-serif;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
width 100%;
}
#menu li {
margin: 0 5px;
padding: 0 0 8px;
float: left;
position: relative;
list-style: none;
}
#menu a,
#menu a:link {
font-weight: bold;
font-size: 16px;
color: #444444;
text-decoration: none;
display: block;
padding: 8px 20px;
margin: 0;
border-radius: 5px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}
#menu a:hover {
background: #000;
color: #fff;
}
#menu .active a,
#menu li:hover > a {
background: #bdbdbd url('/Images/Overlay.png') repeat-x 0 -40px;
background: #666666 url('/Images/Overlay.png') repeat-x 0 -40px;
color: #444;
border-top: solid 1px  #f8f8f8;
-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
text-shadow: 0 1px 0 #ffffff;
}
#menu ul ul li:hover a,
#menu li:hover li a {
background: none;
border: none;
color: #666;
-webkit-box-shadow: none;
-moz-box-shadow: none;
}
#menu ul ul a:hover {
background: #7d7d7d url('/Images/Overlay.png') repeat-x 0 -100px !important;
color: #fff !important;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
#menu li:hover > ul {
display: block;
}
#menu ul ul {
display: none;
margin: 0;
padding: 0;
width: 185px;
position: absolute;
top: 40px;
left: 0;
background: url('/Images/Overlay.png') repeat-x 0 0;
border: solid 1px #b4b4b4;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
#menu ul ul li {
float: none;
margin: 0;
padding: 3px;
}
#menu ul ul a,
#menu ul ul a:link {
font-weight: normal;
font-size: 12px;
}
#menu ul:after {
content: '.';
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}

要触发的函数

那么函数一定会以某种方式影响样式

可能有很多方法可以做到这一点。但最好的办法是什么？让我们看看一些不同的选项

#menu ul {
margin: 0;
padding: 7px 6px 0;
background: #b6b6b6 url('/Images/Overlay.png') repeat-x 0 -110px;
line-height: 100%;
border-radius: 1em;
font: normal 0.5333333333333333em Arial, Helvetica, sans-serif;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
width 100%;
}
#menu li {
margin: 0 5px;
padding: 0 0 8px;
float: left;
position: relative;
list-style: none;
}
#menu a,
#menu a:link {
font-weight: bold;
font-size: 16px;
color: #444444;
text-decoration: none;
display: block;
padding: 8px 20px;
margin: 0;
border-radius: 5px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}
#menu a:hover {
background: #000;
color: #fff;
}
#menu .active a,
#menu li:hover > a {
background: #bdbdbd url('/Images/Overlay.png') repeat-x 0 -40px;
background: #666666 url('/Images/Overlay.png') repeat-x 0 -40px;
color: #444;
border-top: solid 1px  #f8f8f8;
-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
text-shadow: 0 1px 0 #ffffff;
}
#menu ul ul li:hover a,
#menu li:hover li a {
background: none;
border: none;
color: #666;
-webkit-box-shadow: none;
-moz-box-shadow: none;
}
#menu ul ul a:hover {
background: #7d7d7d url('/Images/Overlay.png') repeat-x 0 -100px !important;
color: #fff !important;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
#menu li:hover > ul {
display: block;
}
#menu ul ul {
display: none;
margin: 0;
padding: 0;
width: 185px;
position: absolute;
top: 40px;
left: 0;
background: url('/Images/Overlay.png') repeat-x 0 0;
border: solid 1px #b4b4b4;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
#menu ul ul li {
float: none;
margin: 0;
padding: 3px;
}
#menu ul ul a,
#menu ul ul a:link {
font-weight: normal;
font-size: 12px;
}
#menu ul:after {
content: '.';
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}

要触发的函数

• onclick

  手动嵌入每个菜单元素
• 加载文档时，动态地将

  onclick

  事件注入到每个菜单项中
• 特定类型元素的事件侦听器
• 类的事件侦听器
• 针对每个菜单项的特定

  id

  的多个事件侦听器

在任何情况下，您要么需要一个

onclick

事件，要么需要一个事件侦听器。单击

onclick

更直接

#menu ul {
margin: 0;
padding: 7px 6px 0;
background: #b6b6b6 url('/Images/Overlay.png') repeat-x 0 -110px;
line-height: 100%;
border-radius: 1em;
font: normal 0.5333333333333333em Arial, Helvetica, sans-serif;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
width 100%;
}
#menu li {
margin: 0 5px;
padding: 0 0 8px;
float: left;
position: relative;
list-style: none;
}
#menu a,
#menu a:link {
font-weight: bold;
font-size: 16px;
color: #444444;
text-decoration: none;
display: block;
padding: 8px 20px;
margin: 0;
border-radius: 5px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}
#menu a:hover {
background: #000;
color: #fff;
}
#menu .active a,
#menu li:hover > a {
background: #bdbdbd url('/Images/Overlay.png') repeat-x 0 -40px;
background: #666666 url('/Images/Overlay.png') repeat-x 0 -40px;
color: #444;
border-top: solid 1px  #f8f8f8;
-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
text-shadow: 0 1px 0 #ffffff;
}
#menu ul ul li:hover a,
#menu li:hover li a {
background: none;
border: none;
color: #666;
-webkit-box-shadow: none;
-moz-box-shadow: none;
}
#menu ul ul a:hover {
background: #7d7d7d url('/Images/Overlay.png') repeat-x 0 -100px !important;
color: #fff !important;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
#menu li:hover > ul {
display: block;
}
#menu ul ul {
display: none;
margin: 0;
padding: 0;
width: 185px;
position: absolute;
top: 40px;
left: 0;
background: url('/Images/Overlay.png') repeat-x 0 0;
border: solid 1px #b4b4b4;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
#menu ul ul li {
float: none;
margin: 0;
padding: 3px;
}
#menu ul ul a,
#menu ul ul a:link {
font-weight: normal;
font-size: 12px;
}
#menu ul:after {
content: '.';
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}

<a onclick="myFunction()">Home</a>

即使使用

这个

关键字，您仍然需要一个

id

<代码>此.id

#menu ul {
margin: 0;
padding: 7px 6px 0;
background: #b6b6b6 url('/Images/Overlay.png') repeat-x 0 -110px;
line-height: 100%;
border-radius: 1em;
font: normal 0.5333333333333333em Arial, Helvetica, sans-serif;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
width 100%;
}
#menu li {
margin: 0 5px;
padding: 0 0 8px;
float: left;
position: relative;
list-style: none;
}
#menu a,
#menu a:link {
font-weight: bold;
font-size: 16px;
color: #444444;
text-decoration: none;
display: block;
padding: 8px 20px;
margin: 0;
border-radius: 5px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}
#menu a:hover {
background: #000;
color: #fff;
}
#menu .active a,
#menu li:hover > a {
background: #bdbdbd url('/Images/Overlay.png') repeat-x 0 -40px;
background: #666666 url('/Images/Overlay.png') repeat-x 0 -40px;
color: #444;
border-top: solid 1px  #f8f8f8;
-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
text-shadow: 0 1px 0 #ffffff;
}
#menu ul ul li:hover a,
#menu li:hover li a {
background: none;
border: none;
color: #666;
-webkit-box-shadow: none;
-moz-box-shadow: none;
}
#menu ul ul a:hover {
background: #7d7d7d url('/Images/Overlay.png') repeat-x 0 -100px !important;
color: #fff !important;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
#menu li:hover > ul {
display: block;
}
#menu ul ul {
display: none;
margin: 0;
padding: 0;
width: 185px;
position: absolute;
top: 40px;
left: 0;
background: url('/Images/Overlay.png') repeat-x 0 0;
border: solid 1px #b4b4b4;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
#menu ul ul li {
float: none;
margin: 0;
padding: 3px;
}
#menu ul ul a,
#menu ul ul a:link {
font-weight: normal;
font-size: 12px;
}
#menu ul:after {
content: '.';
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}

<body>
 <a id="myId" onclick="runIt(this.id)">Home</a>
</body> 

<script type="text/javascript">
    function runIt(argInput) {
        alert("This is what was passed in: " + argInput);
    };
</script>

上面的代码行不会提供任何内容来引用所单击的元素

#menu ul {
margin: 0;
padding: 7px 6px 0;
background: #b6b6b6 url('/Images/Overlay.png') repeat-x 0 -110px;
line-height: 100%;
border-radius: 1em;
font: normal 0.5333333333333333em Arial, Helvetica, sans-serif;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
width 100%;
}
#menu li {
margin: 0 5px;
padding: 0 0 8px;
float: left;
position: relative;
list-style: none;
}
#menu a,
#menu a:link {
font-weight: bold;
font-size: 16px;
color: #444444;
text-decoration: none;
display: block;
padding: 8px 20px;
margin: 0;
border-radius: 5px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}
#menu a:hover {
background: #000;
color: #fff;
}
#menu .active a,
#menu li:hover > a {
background: #bdbdbd url('/Images/Overlay.png') repeat-x 0 -40px;
background: #666666 url('/Images/Overlay.png') repeat-x 0 -40px;
color: #444;
border-top: solid 1px  #f8f8f8;
-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
text-shadow: 0 1px 0 #ffffff;
}
#menu ul ul li:hover a,
#menu li:hover li a {
background: none;
border: none;
color: #666;
-webkit-box-shadow: none;
-moz-box-shadow: none;
}
#menu ul ul a:hover {
background: #7d7d7d url('/Images/Overlay.png') repeat-x 0 -100px !important;
color: #fff !important;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
#menu li:hover > ul {
display: block;
}
#menu ul ul {
display: none;
margin: 0;
padding: 0;
width: 185px;
position: absolute;
top: 40px;
left: 0;
background: url('/Images/Overlay.png') repeat-x 0 0;
border: solid 1px #b4b4b4;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
#menu ul ul li {
float: none;
margin: 0;
padding: 3px;
}
#menu ul ul a,
#menu ul ul a:link {
font-weight: normal;
font-size: 12px;
}
#menu ul:after {
content: '.';
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}

因此，同样，即使使用了

this

关键字，也需要有一种方法来识别单击了哪个元素

#menu ul {
margin: 0;
padding: 7px 6px 0;
background: #b6b6b6 url('/Images/Overlay.png') repeat-x 0 -110px;
line-height: 100%;
border-radius: 1em;
font: normal 0.5333333333333333em Arial, Helvetica, sans-serif;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
width 100%;
}
#menu li {
margin: 0 5px;
padding: 0 0 8px;
float: left;
position: relative;
list-style: none;
}
#menu a,
#menu a:link {
font-weight: bold;
font-size: 16px;
color: #444444;
text-decoration: none;
display: block;
padding: 8px 20px;
margin: 0;
border-radius: 5px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}
#menu a:hover {
background: #000;
color: #fff;
}
#menu .active a,
#menu li:hover > a {
background: #bdbdbd url('/Images/Overlay.png') repeat-x 0 -40px;
background: #666666 url('/Images/Overlay.png') repeat-x 0 -40px;
color: #444;
border-top: solid 1px  #f8f8f8;
-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
text-shadow: 0 1px 0 #ffffff;
}
#menu ul ul li:hover a,
#menu li:hover li a {
background: none;
border: none;
color: #666;
-webkit-box-shadow: none;
-moz-box-shadow: none;
}
#menu ul ul a:hover {
background: #7d7d7d url('/Images/Overlay.png') repeat-x 0 -100px !important;
color: #fff !important;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
#menu li:hover > ul {
display: block;
}
#menu ul ul {
display: none;
margin: 0;
padding: 0;
width: 185px;
position: absolute;
top: 40px;
left: 0;
background: url('/Images/Overlay.png') repeat-x 0 0;
border: solid 1px #b4b4b4;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
#menu ul ul li {
float: none;
margin: 0;
padding: 3px;
}
#menu ul ul a,
#menu ul ul a:link {
font-weight: normal;
font-size: 12px;
}
#menu ul:after {
content: '.';
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}

更改样式 要更改菜单项的样式，可以使用以下代码：

#menu ul {
margin: 0;
padding: 7px 6px 0;
background: #b6b6b6 url('/Images/Overlay.png') repeat-x 0 -110px;
line-height: 100%;
border-radius: 1em;
font: normal 0.5333333333333333em Arial, Helvetica, sans-serif;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
width 100%;
}
#menu li {
margin: 0 5px;
padding: 0 0 8px;
float: left;
position: relative;
list-style: none;
}
#menu a,
#menu a:link {
font-weight: bold;
font-size: 16px;
color: #444444;
text-decoration: none;
display: block;
padding: 8px 20px;
margin: 0;
border-radius: 5px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}
#menu a:hover {
background: #000;
color: #fff;
}
#menu .active a,
#menu li:hover > a {
background: #bdbdbd url('/Images/Overlay.png') repeat-x 0 -40px;
background: #666666 url('/Images/Overlay.png') repeat-x 0 -40px;
color: #444;
border-top: solid 1px  #f8f8f8;
-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
text-shadow: 0 1px 0 #ffffff;
}
#menu ul ul li:hover a,
#menu li:hover li a {
background: none;
border: none;
color: #666;
-webkit-box-shadow: none;
-moz-box-shadow: none;
}
#menu ul ul a:hover {
background: #7d7d7d url('/Images/Overlay.png') repeat-x 0 -100px !important;
color: #fff !important;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
#menu li:hover > ul {
display: block;
}
#menu ul ul {
display: none;
margin: 0;
padding: 0;
width: 185px;
position: absolute;
top: 40px;
left: 0;
background: url('/Images/Overlay.png') repeat-x 0 0;
border: solid 1px #b4b4b4;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
#menu ul ul li {
float: none;
margin: 0;
padding: 3px;
}
#menu ul ul a,
#menu ul ul a:link {
font-weight: normal;
font-size: 12px;
}
#menu ul:after {
content: '.';
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}

<body>
 <a id="myId" onclick="runIt(this.id)">Home</a>
</body> 

<script type="text/javascript">     
    function runIt(argInput) {
        //alert("This is what was passed in: " + argInput);
        var whatMenuItem = argInput;
        var objectElement = document.getElementById(whatMenuItem);
        objectElement.style.color = "green";        
    };
</script>

现在，您的HTML中又添加了一个内容

#menu ul {
margin: 0;
padding: 7px 6px 0;
background: #b6b6b6 url('/Images/Overlay.png') repeat-x 0 -110px;
line-height: 100%;
border-radius: 1em;
font: normal 0.5333333333333333em Arial, Helvetica, sans-serif;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
width 100%;
}
#menu li {
margin: 0 5px;
padding: 0 0 8px;
float: left;
position: relative;
list-style: none;
}
#menu a,
#menu a:link {
font-weight: bold;
font-size: 16px;
color: #444444;
text-decoration: none;
display: block;
padding: 8px 20px;
margin: 0;
border-radius: 5px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}
#menu a:hover {
background: #000;
color: #fff;
}
#menu .active a,
#menu li:hover > a {
background: #bdbdbd url('/Images/Overlay.png') repeat-x 0 -40px;
background: #666666 url('/Images/Overlay.png') repeat-x 0 -40px;
color: #444;
border-top: solid 1px  #f8f8f8;
-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
text-shadow: 0 1px 0 #ffffff;
}
#menu ul ul li:hover a,
#menu li:hover li a {
background: none;
border: none;
color: #666;
-webkit-box-shadow: none;
-moz-box-shadow: none;
}
#menu ul ul a:hover {
background: #7d7d7d url('/Images/Overlay.png') repeat-x 0 -100px !important;
color: #fff !important;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
#menu li:hover > ul {
display: block;
}
#menu ul ul {
display: none;
margin: 0;
padding: 0;
width: 185px;
position: absolute;
top: 40px;
left: 0;
background: url('/Images/Overlay.png') repeat-x 0 0;
border: solid 1px #b4b4b4;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
#menu ul ul li {
float: none;
margin: 0;
padding: 3px;
}
#menu ul ul a,
#menu ul ul a:link {
font-weight: normal;
font-size: 12px;
}
#menu ul:after {
content: '.';
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}

<div id="menu">
    <ul>
        <li><a class="myMenu" id="xyz1" href="#" title="Update"><span>Home</span></a></li>
        <li><a class="myMenu" id="abc2" href="#" title="Save"><span>Save</span></a></li>
        <li><a class="myMenu" id="hij9" href="#" title="User"><span>User</span></a></li>
    </ul>
</div>

此JSFIDLE显示如何使用事件侦听器更改菜单样式：

#menu ul {
margin: 0;
padding: 7px 6px 0;
background: #b6b6b6 url('/Images/Overlay.png') repeat-x 0 -110px;
line-height: 100%;
border-radius: 1em;
font: normal 0.5333333333333333em Arial, Helvetica, sans-serif;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
width 100%;
}
#menu li {
margin: 0 5px;
padding: 0 0 8px;
float: left;
position: relative;
list-style: none;
}
#menu a,
#menu a:link {
font-weight: bold;
font-size: 16px;
color: #444444;
text-decoration: none;
display: block;
padding: 8px 20px;
margin: 0;
border-radius: 5px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}
#menu a:hover {
background: #000;
color: #fff;
}
#menu .active a,
#menu li:hover > a {
background: #bdbdbd url('/Images/Overlay.png') repeat-x 0 -40px;
background: #666666 url('/Images/Overlay.png') repeat-x 0 -40px;
color: #444;
border-top: solid 1px  #f8f8f8;
-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
text-shadow: 0 1px 0 #ffffff;
}
#menu ul ul li:hover a,
#menu li:hover li a {
background: none;
border: none;
color: #666;
-webkit-box-shadow: none;
-moz-box-shadow: none;
}
#menu ul ul a:hover {
background: #7d7d7d url('/Images/Overlay.png') repeat-x 0 -100px !important;
color: #fff !important;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
#menu li:hover > ul {
display: block;
}
#menu ul ul {
display: none;
margin: 0;
padding: 0;
width: 185px;
position: absolute;
top: 40px;
left: 0;
background: url('/Images/Overlay.png') repeat-x 0 0;
border: solid 1px #b4b4b4;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
#menu ul ul li {
float: none;
margin: 0;
padding: 3px;
}
#menu ul ul a,
#menu ul ul a:link {
font-weight: normal;
font-size: 12px;
}
#menu ul:after {
content: '.';
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}

#menu ul {
margin: 0;
padding: 7px 6px 0;
background: #b6b6b6 url('/Images/Overlay.png') repeat-x 0 -110px;
line-height: 100%;
border-radius: 1em;
font: normal 0.5333333333333333em Arial, Helvetica, sans-serif;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
width 100%;
}
#menu li {
margin: 0 5px;
padding: 0 0 8px;
float: left;
position: relative;
list-style: none;
}
#menu a,
#menu a:link {
font-weight: bold;
font-size: 16px;
color: #444444;
text-decoration: none;
display: block;
padding: 8px 20px;
margin: 0;
border-radius: 5px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}
#menu a:hover {
background: #000;
color: #fff;
}
#menu .active a,
#menu li:hover > a {
background: #bdbdbd url('/Images/Overlay.png') repeat-x 0 -40px;
background: #666666 url('/Images/Overlay.png') repeat-x 0 -40px;
color: #444;
border-top: solid 1px  #f8f8f8;
-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
text-shadow: 0 1px 0 #ffffff;
}
#menu ul ul li:hover a,
#menu li:hover li a {
background: none;
border: none;
color: #666;
-webkit-box-shadow: none;
-moz-box-shadow: none;
}
#menu ul ul a:hover {
background: #7d7d7d url('/Images/Overlay.png') repeat-x 0 -100px !important;
color: #fff !important;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
#menu li:hover > ul {
display: block;
}
#menu ul ul {
display: none;
margin: 0;
padding: 0;
width: 185px;
position: absolute;
top: 40px;
left: 0;
background: url('/Images/Overlay.png') repeat-x 0 0;
border: solid 1px #b4b4b4;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
#menu ul ul li {
float: none;
margin: 0;
padding: 3px;
}
#menu ul ul a,
#menu ul ul a:link {
font-weight: normal;
font-size: 12px;
}
#menu ul:after {
content: '.';
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}

确定单击了哪个菜单元素并更改该菜单元素的样式只是所需内容的一部分。如果用户导航到另一个菜单，则需要有一种方法将菜单项恢复到其原始样式

#menu ul {
margin: 0;
padding: 7px 6px 0;
background: #b6b6b6 url('/Images/Overlay.png') repeat-x 0 -110px;
line-height: 100%;
border-radius: 1em;
font: normal 0.5333333333333333em Arial, Helvetica, sans-serif;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
width 100%;
}
#menu li {
margin: 0 5px;
padding: 0 0 8px;
float: left;
position: relative;
list-style: none;
}
#menu a,
#menu a:link {
font-weight: bold;
font-size: 16px;
color: #444444;
text-decoration: none;
display: block;
padding: 8px 20px;
margin: 0;
border-radius: 5px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}
#menu a:hover {
background: #000;
color: #fff;
}
#menu .active a,
#menu li:hover > a {
background: #bdbdbd url('/Images/Overlay.png') repeat-x 0 -40px;
background: #666666 url('/Images/Overlay.png') repeat-x 0 -40px;
color: #444;
border-top: solid 1px  #f8f8f8;
-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
text-shadow: 0 1px 0 #ffffff;
}
#menu ul ul li:hover a,
#menu li:hover li a {
background: none;
border: none;
color: #666;
-webkit-box-shadow: none;
-moz-box-shadow: none;
}
#menu ul ul a:hover {
background: #7d7d7d url('/Images/Overlay.png') repeat-x 0 -100px !important;
color: #fff !important;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
#menu li:hover > ul {
display: block;
}
#menu ul ul {
display: none;
margin: 0;
padding: 0;
width: 185px;
position: absolute;
top: 40px;
left: 0;
background: url('/Images/Overlay.png') repeat-x 0 0;
border: solid 1px #b4b4b4;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
#menu ul ul li {
float: none;
margin: 0;
padding: 3px;
}
#menu ul ul a,
#menu ul ul a:link {
font-weight: normal;
font-size: 12px;
}
#menu ul:after {
content: '.';
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}

这个JSFIDLE显示了一个完整的工作示例，突出显示当前菜单项，记录当前菜单项，将旧菜单项设置回默认值，并检查用户是否两次单击活动菜单项

#menu ul {
margin: 0;
padding: 7px 6px 0;
background: #b6b6b6 url('/Images/Overlay.png') repeat-x 0 -110px;
line-height: 100%;
border-radius: 1em;
font: normal 0.5333333333333333em Arial, Helvetica, sans-serif;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
width 100%;
}
#menu li {
margin: 0 5px;
padding: 0 0 8px;
float: left;
position: relative;
list-style: none;
}
#menu a,
#menu a:link {
font-weight: bold;
font-size: 16px;
color: #444444;
text-decoration: none;
display: block;
padding: 8px 20px;
margin: 0;
border-radius: 5px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}
#menu a:hover {
background: #000;
color: #fff;
}
#menu .active a,
#menu li:hover > a {
background: #bdbdbd url('/Images/Overlay.png') repeat-x 0 -40px;
background: #666666 url('/Images/Overlay.png') repeat-x 0 -40px;
color: #444;
border-top: solid 1px  #f8f8f8;
-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
text-shadow: 0 1px 0 #ffffff;
}
#menu ul ul li:hover a,
#menu li:hover li a {
background: none;
border: none;
color: #666;
-webkit-box-shadow: none;
-moz-box-shadow: none;
}
#menu ul ul a:hover {
background: #7d7d7d url('/Images/Overlay.png') repeat-x 0 -100px !important;
color: #fff !important;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
#menu li:hover > ul {
display: block;
}
#menu ul ul {
display: none;
margin: 0;
padding: 0;
width: 185px;
position: absolute;
top: 40px;
left: 0;
background: url('/Images/Overlay.png') repeat-x 0 0;
border: solid 1px #b4b4b4;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
#menu ul ul li {
float: none;
margin: 0;
padding: 3px;
}
#menu ul ul a,
#menu ul ul a:link {
font-weight: normal;
font-size: 12px;
}
#menu ul:after {
content: '.';
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}

---

为什么要使用复杂的JavaScript或jQuery？这可以通过一些简单的CSS和HTML轻松完成

#menu ul {
margin: 0;
padding: 7px 6px 0;
background: #b6b6b6 url('/Images/Overlay.png') repeat-x 0 -110px;
line-height: 100%;
border-radius: 1em;
font: normal 0.5333333333333333em Arial, Helvetica, sans-serif;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
width 100%;
}
#menu li {
margin: 0 5px;
padding: 0 0 8px;
float: left;
position: relative;
list-style: none;
}
#menu a,
#menu a:link {
font-weight: bold;
font-size: 16px;
color: #444444;
text-decoration: none;
display: block;
padding: 8px 20px;
margin: 0;
border-radius: 5px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}
#menu a:hover {
background: #000;
color: #fff;
}
#menu .active a,
#menu li:hover > a {
background: #bdbdbd url('/Images/Overlay.png') repeat-x 0 -40px;
background: #666666 url('/Images/Overlay.png') repeat-x 0 -40px;
color: #444;
border-top: solid 1px  #f8f8f8;
-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
text-shadow: 0 1px 0 #ffffff;
}
#menu ul ul li:hover a,
#menu li:hover li a {
background: none;
border: none;
color: #666;
-webkit-box-shadow: none;
-moz-box-shadow: none;
}
#menu ul ul a:hover {
background: #7d7d7d url('/Images/Overlay.png') repeat-x 0 -100px !important;
color: #fff !important;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
#menu li:hover > ul {
display: block;
}
#menu ul ul {
display: none;
margin: 0;
padding: 0;
width: 185px;
position: absolute;
top: 40px;
left: 0;
background: url('/Images/Overlay.png') repeat-x 0 0;
border: solid 1px #b4b4b4;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
#menu ul ul li {
float: none;
margin: 0;
padding: 3px;
}
#menu ul ul a,
#menu ul ul a:link {
font-weight: normal;
font-size: 12px;
}
#menu ul:after {
content: '.';
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}

为活动页面创建CSS类，例如：

#menu ul {
margin: 0;
padding: 7px 6px 0;
background: #b6b6b6 url('/Images/Overlay.png') repeat-x 0 -110px;
line-height: 100%;
border-radius: 1em;
font: normal 0.5333333333333333em Arial, Helvetica, sans-serif;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
width 100%;
}
#menu li {
margin: 0 5px;
padding: 0 0 8px;
float: left;
position: relative;
list-style: none;
}
#menu a,
#menu a:link {
font-weight: bold;
font-size: 16px;
color: #444444;
text-decoration: none;
display: block;
padding: 8px 20px;
margin: 0;
border-radius: 5px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}
#menu a:hover {
background: #000;
color: #fff;
}
#menu .active a,
#menu li:hover > a {
background: #bdbdbd url('/Images/Overlay.png') repeat-x 0 -40px;
background: #666666 url('/Images/Overlay.png') repeat-x 0 -40px;
color: #444;
border-top: solid 1px  #f8f8f8;
-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
text-shadow: 0 1px 0 #ffffff;
}
#menu ul ul li:hover a,
#menu li:hover li a {
background: none;
border: none;
color: #666;
-webkit-box-shadow: none;
-moz-box-shadow: none;
}
#menu ul ul a:hover {
background: #7d7d7d url('/Images/Overlay.png') repeat-x 0 -100px !important;
color: #fff !important;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
#menu li:hover > ul {
display: block;
}
#menu ul ul {
display: none;
margin: 0;
padding: 0;
width: 185px;
position: absolute;
top: 40px;
left: 0;
background: url('/Images/Overlay.png') repeat-x 0 0;
border: solid 1px #b4b4b4;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
#menu ul ul li {
float: none;
margin: 0;
padding: 3px;
}
#menu ul ul a,
#menu ul ul a:link {
font-weight: normal;
font-size: 12px;
}
#menu ul:after {
content: '.';
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}

.active{
background-color:white;
color:red;

}

然后在每个页面上，将导航栏中的class

.active

添加到当前页面的菜单项中，例如：

#menu ul {
margin: 0;
padding: 7px 6px 0;
background: #b6b6b6 url('/Images/Overlay.png') repeat-x 0 -110px;
line-height: 100%;
border-radius: 1em;
font: normal 0.5333333333333333em Arial, Helvetica, sans-serif;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
width 100%;
}
#menu li {
margin: 0 5px;
padding: 0 0 8px;
float: left;
position: relative;
list-style: none;
}
#menu a,
#menu a:link {
font-weight: bold;
font-size: 16px;
color: #444444;
text-decoration: none;
display: block;
padding: 8px 20px;
margin: 0;
border-radius: 5px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}
#menu a:hover {
background: #000;
color: #fff;
}
#menu .active a,
#menu li:hover > a {
background: #bdbdbd url('/Images/Overlay.png') repeat-x 0 -40px;
background: #666666 url('/Images/Overlay.png') repeat-x 0 -40px;
color: #444;
border-top: solid 1px  #f8f8f8;
-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
text-shadow: 0 1px 0 #ffffff;
}
#menu ul ul li:hover a,
#menu li:hover li a {
background: none;
border: none;
color: #666;
-webkit-box-shadow: none;
-moz-box-shadow: none;
}
#menu ul ul a:hover {
background: #7d7d7d url('/Images/Overlay.png') repeat-x 0 -100px !important;
color: #fff !important;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
#menu li:hover > ul {
display: block;
}
#menu ul ul {
display: none;
margin: 0;
padding: 0;
width: 185px;
position: absolute;
top: 40px;
left: 0;
background: url('/Images/Overlay.png') repeat-x 0 0;
border: solid 1px #b4b4b4;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
#menu ul ul li {
float: none;
margin: 0;
padding: 3px;
}
#menu ul ul a,
#menu ul ul a:link {
font-weight: normal;
font-size: 12px;
}
#menu ul:after {
content: '.';
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}

.active{
background-color:white;
color:red;

}

**在

更新

页面上：**

#menu ul {
margin: 0;
padding: 7px 6px 0;
background: #b6b6b6 url('/Images/Overlay.png') repeat-x 0 -110px;
line-height: 100%;
border-radius: 1em;
font: normal 0.5333333333333333em Arial, Helvetica, sans-serif;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
width 100%;
}
#menu li {
margin: 0 5px;
padding: 0 0 8px;
float: left;
position: relative;
list-style: none;
}
#menu a,
#menu a:link {
font-weight: bold;
font-size: 16px;
color: #444444;
text-decoration: none;
display: block;
padding: 8px 20px;
margin: 0;
border-radius: 5px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}
#menu a:hover {
background: #000;
color: #fff;
}
#menu .active a,
#menu li:hover > a {
background: #bdbdbd url('/Images/Overlay.png') repeat-x 0 -40px;
background: #666666 url('/Images/Overlay.png') repeat-x 0 -40px;
color: #444;
border-top: solid 1px  #f8f8f8;
-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
text-shadow: 0 1px 0 #ffffff;
}
#menu ul ul li:hover a,
#menu li:hover li a {
background: none;
border: none;
color: #666;
-webkit-box-shadow: none;
-moz-box-shadow: none;
}
#menu ul ul a:hover {
background: #7d7d7d url('/Images/Overlay.png') repeat-x 0 -100px !important;
color: #fff !important;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
#menu li:hover > ul {
display: block;
}
#menu ul ul {
display: none;
margin: 0;
padding: 0;
width: 185px;
position: absolute;
top: 40px;
left: 0;
background: url('/Images/Overlay.png') repeat-x 0 0;
border: solid 1px #b4b4b4;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
#menu ul ul li {
float: none;
margin: 0;
padding: 3px;
}
#menu ul ul a,
#menu ul ul a:link {
font-weight: normal;
font-size: 12px;
}
#menu ul:after {
content: '.';
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}

<div id="menu">
                <ul>
                    <li><a href="Update.aspx" class="active" title="Update"><span>Home</span></a></li>
                    <li><a href="Save.aspx" title="Save"><span>Save</span></a></li>
                    <li><a href="User.aspx" title="User"><span>User</span></a></li>
                </ul>
            </div>

---

因此，在每个页面上，无论导航栏中的哪个

是当前页面，只需添加如上所示的

class=“active”

。

您应该通过PHP或ASP（或者javascript）定义页面，然后向菜单li添加一个if语句，并说如果该页面定义为例如主页，则添加一个特定的类。我已经创建了一个JSFIDLE，尝试在这里实现您的解决方案：我不明白它将如何工作。您可以编辑JSFIDLE并更新一个工作版本，然后将链接发布回这里吗。如果有更好的方法，我想知道它是什么。这个答案是假设有不同的页面可以链接，如菜单栏所示。。。这不能在JSFIDLE中显示，因为一个FIDLE就是一个页面，链接显然无法工作。。。请在本地驱动器上试用，制作一些HTML/asp页面，并在每个页面上包含菜单条形码。。。然后，对于菜单栏中的哪个

是当前页面，将

class=“active”

添加到itOkay，我想我现在明白了。每一页都有自己的菜单。是的，我知道这是怎么回事。因此，除了

class=“active”

部分之外，每个页面都在复制菜单。我假设只有一个菜单，所有页面都被注入到主shell页面中。

#menu ul {
margin: 0;
padding: 7px 6px 0;
background: #b6b6b6 url('/Images/Overlay.png') repeat-x 0 -110px;
line-height: 100%;
border-radius: 1em;
font: normal 0.5333333333333333em Arial, Helvetica, sans-serif;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
width 100%;
}
#menu li {
margin: 0 5px;
padding: 0 0 8px;
float: left;
position: relative;
list-style: none;
}
#menu a,
#menu a:link {
font-weight: bold;
font-size: 16px;
color: #444444;
text-decoration: none;
display: block;
padding: 8px 20px;
margin: 0;
border-radius: 5px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.3);
}
#menu a:hover {
background: #000;
color: #fff;
}
#menu .active a,
#menu li:hover > a {
background: #bdbdbd url('/Images/Overlay.png') repeat-x 0 -40px;
background: #666666 url('/Images/Overlay.png') repeat-x 0 -40px;
color: #444;
border-top: solid 1px  #f8f8f8;
-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
text-shadow: 0 1px 0 #ffffff;
}
#menu ul ul li:hover a,
#menu li:hover li a {
background: none;
border: none;
color: #666;
-webkit-box-shadow: none;
-moz-box-shadow: none;
}
#menu ul ul a:hover {
background: #7d7d7d url('/Images/Overlay.png') repeat-x 0 -100px !important;
color: #fff !important;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
#menu li:hover > ul {
display: block;
}
#menu ul ul {
display: none;
margin: 0;
padding: 0;
width: 185px;
position: absolute;
top: 40px;
left: 0;
background: url('/Images/Overlay.png') repeat-x 0 0;
border: solid 1px #b4b4b4;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
-moz-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
#menu ul ul li {
float: none;
margin: 0;
padding: 3px;
}
#menu ul ul a,
#menu ul ul a:link {
font-weight: normal;
font-size: 12px;
}
#menu ul:after {
content: '.';
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}