早前發(fā)現(xiàn)了 Soh Tanaka 分享的非常 Sexy 的 Drop Down Menu w/ jQuery & CSS，稍作修改實(shí)現(xiàn)了多級(jí)下拉，并實(shí)現(xiàn)了 ASP.NET 中通過(guò)輸出 HTML 動(dòng)態(tài)創(chuàng)建版本，有興趣的童鞋可以包裝成 Server Control。

如何實(shí)現(xiàn)
Step 1 HTML

復(fù)制代碼代碼如下:

 
<ul class="topmenu"> 
<li><a href="#">Home</a></li> 
<li><a href="#">Tutorials</a> 
<ul class="submenu1"> 
<li><a href="#">Ch1</a></li> 
<li><a href="#">Ch2</a> 
<ul class="submenu11"> 
<li><a href="#">Ch21</a> 
<ul class="submenu11"> 
<li><a href="#">Ch211</a> 
<ul class="submenu11"> 
<li><a href="#">Ch2111</a> 
<ul class="submenu11"> 
<li><a href="#">Ch21111</a></li> 
<li><a href="#">Ch21112</a></li> 
<li><a href="#">Ch21113</a></li> 
<li><a href="#">Ch21114</a></li> 
<li><a href="#">Ch21115</a></li> 
<li><a href="#">Ch21116</a></li> 
</ul> 
</li> 
<li><a href="#">Ch2112</a></li> 
<li><a href="#">Ch2113</a></li> 
<li><a href="#">Ch2114</a></li> 
<li><a href="#">Ch2115</a></li> 
</ul> 
</li> 
<li><a href="#">Ch212</a></li> 
<li><a href="#">Ch213</a></li> 
<li><a href="#">Ch214</a></li> 
</ul> 
</li> 
<li><a href="#">Ch22</a> 
<ul class="submenu11"> 
<li><a href="#">Ch221</a></li> 
<li><a href="#">Ch222</a></li> 
<li><a href="#">Ch223</a></li> 
</ul> 
</li> 
<li><a href="#">Ch23</a></li> 
</ul> 
</li> 
<li><a href="#">Ch3</a> 
<ul class="submenu11"> 
<li><a href="#">Ch31</a></li> 
<li><a href="#">Ch32</a></li> 
</ul> 
</li> 
</ul> 
</li> 
<li><a href="#">Resources</a> 
<ul class="submenu1"> 
<li><a href="#">Sub Nav Link</a></li> 
<li><a href="#">Sub Nav Link</a></li> 
</ul> 
</li> 
<li><a href="#">About Us</a></li> 
<li><a href="#">Advertise</a></li> 
<li><a href="#">Submit</a></li> 
<li><a href="#">Contact Us</a></li> 
</ul> 

Step 2 CSS

復(fù)制代碼代碼如下:

 
<style type="text/css"> 
/* Header */ 
body 
{ 
margin: 0; 
padding: 0; 
font: 10px normal Arial, Helvetica, sans-serif; 
background: #ddd url(images/sexydropdownmenu/body_bg.gif) repeat-x; 
} 
.container 
{ 
width: 960px; 
margin: 0 auto; 
position: relative; 
} 
#header 
{ 
background: url(images/sexydropdownmenu/header_bg.gif) no-repeat center top; 
padding-top: 120px; 
} 
#header .version 
{ 
color: #111; 
font-size: 40px; 
padding: 38px 450px 7px 0; 
text-align: right; 
display: block; 
position: absolute; 
top: 0; 
right: 0; 
} 
#header .disclaimer 
{ 
color: #999; 
padding: 100px 0 7px 0; 
text-align: right; 
display: block; 
position: absolute; 
top: 0; 
right: 0; 
} 
#header .disclaimer a 
{ 
color: #ccc; 
} 
/* Sexy Drop Down Menu */ 
ul.topmenu 
{ 
list-style: none; 
padding: 0 20px; 
margin: 0; 
float: left; 
width: 920px; 
background: #222; 
font-size: 1.2em; 
background: url(images/sexydropdownmenu/topnav_bg.gif) repeat-x; 
} 
ul.topmenu li 
{ 
float: left; 
margin: 0; 
padding: 0 15px 0 0; 
position: relative; /*--Declare X and Y axis base for sub navigation--*/ 
} 
ul.topmenu li a, ul.topmenu li a.hover 
{ 
padding: 10px 5px; 
color: #fff; 
display: block; 
text-decoration: none; 
float: left; 
} 
ul.topmenu li a.hover, ul.topmenu li a:hover 
{ 
background: url(images/sexydropdownmenu/topnav_hover.gif) no-repeat center top; 
} 
ul.topmenu li span 
{ 
/*--Drop down trigger styles--*/ 
width: 17px; 
height: 35px; 
float: left; 
background: url(images/sexydropdownmenu/subnav_btn.gif) no-repeat center top; 
} 
ul.topmenu li span.hover 
{ 
background-position: center bottom; 
cursor: pointer; 
} 
ul.topmenu li ul.submenu1 
{ 
/*--Hover effect for trigger--*/ 
list-style: none; 
position: absolute; /*--Important - Keeps submenu1 from affecting main navigation flow--*/ 
left: 0; 
top: 35px; 
background: #333; 
margin: 0; 
padding: 0; 
display: none; 
float: left; 
width: 170px; 
border: 1px solid #111; 
} 
ul.topmenu li ul.submenu1 li 
{ 
margin: 0; 
padding: 0; 
border-top: 1px solid #252525; /*--Create bevel effect--*/ 
border-bottom: 1px solid #444; /*--Create bevel effect--*/ 
clear: both; 
width: 170px; 
} 
ul.topmenu li ul.submenu1 li a 
{ 
float: left; 
width: 145px; 
background: #333 url(images/sexydropdownmenu/dropdown_linkbg.gif) no-repeat 10px center; 
padding-left: 20px; 
} 
ul.topmenu li ul.submenu1 li a:hover 
{ 
/*--Hover effect for submenu1 links--*/ 
background: #222 url(images/sexydropdownmenu/dropdown_linkbg.gif) no-repeat 10px center; 
} 
ul.topmenu li ul.submenu1 li ul.submenu11 
{ 
list-style: none; 
position: absolute; /*--Important - Keeps submenu11 from affecting main navigation flow--*/ 
left: 170px; 
top: -2px; 
background: #333; 
margin: 0; 
padding: 0; 
display: none; 
float: left; 
width: 170px; 
border: 1px solid #111; 
} 
</style> 

Step 3 jQuery

復(fù)制代碼代碼如下:

 
<script type="text/javascript"> 
$(document).ready(function() { 
// Top Menu 
$("ul.submenu1").parent().append("<span></span>"); //Only shows drop down trigger when js is enabled (Adds empty span tag after ul.submenu1*) 
$("ul.topmenu li span").click(function() { //When trigger is clicked... 
//Following events are applied to the submenu1 itself (moving submenu1 up and down) 
$(this).parent().find("ul.submenu1").slideDown('fast').show(); //Drop down the submenu1 on click 
$(this).parent().hover(function() { 
}, function() { 
$(this).parent().find("ul.submenu1").slideUp('slow'); //When the mouse hovers out of the submenu1, move it back up 
}); 
//Following events are applied to the trigger (Hover events for the trigger) 
}).hover(function() { 
$(this).addClass("hover"); //On hover over, add class "hover" 
}, function() { //On Hover Out 
$(this).removeClass("hover"); //On hover out, remove class "hover" 
}); 

$("ul.topmenu li ul.submenu1 li").hover(function() { 
$(this).find("ul.submenu11:first").show("slow"); 
}, function() { 
$(this).find("ul.submenu11:first").hide("fast"); 
}); 
}); 
</script> 