特效描述：基于jQuery实现 鼠标移动 垂直滚动菜单，基于jQuery实现鼠标移动垂直滚动菜单效果
代码结构
1. 引入JS
<script type="text/javascript" src="js/jquery-1.3.1.min.js"></script> <script type="text/javascript" src="js/jquery.easing.1.3.js"></script> <script type="text/javascript" src="js/jquery.color.js"></script> <script type="text/javascript" src="js/jquery-1.3.1.min.js"></script> <script type="text/javascript" src="js/jquery.easing.1.3.js"></script> <script type="text/javascript" src="js/jquery.color.js"></script>
2. HTML代码
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script type="text/javascript">
$(document).ready(function() {
//Background color, mouseover and mouseout
var colorOver = '#31b8da';
var colorOut = '#1f1f1f';
//Padding, mouseover
var padLeft = '20px';
var padRight = '20px';
//Default Padding
var defpadLeft = $('#menu li a').css('paddingLeft');
var defpadRight = $('#menu li a').css('paddingRight');
//Animate the LI on mouse over, mouse out
$('#menu li').click(function () {
//Make LI clickable
window.location = $(this).find('a').attr('href');
}).mouseover(function (){
//mouse over LI and look for A element for transition
$(this).find('a')
.animate( { paddingLeft: padLeft, paddingRight: padRight}, { queue:false, duration:100 } )
.animate( { backgroundColor: colorOver }, { queue:false, duration:200 });
}).mouseout(function () {
//mouse oout LI and look for A element and discard the mouse over transition
$(this).find('a')
.animate( { paddingLeft: defpadLeft, paddingRight: defpadRight}, { queue:false, duration:100 } )
.animate( { backgroundColor: colorOut }, { queue:false, duration:200 });
});
//Scroll the menu on mouse move above the #sidebar layer
$('#sidebar').mousemove(function(e) {
//Sidebar Offset, Top value
var s_top = parseInt($('#sidebar').offset().top);
//Sidebar Offset, Bottom value
var s_bottom = parseInt($('#sidebar').height() + s_top);
//Roughly calculate the height of the menu by multiply height of a single LI with the total of LIs
var mheight = parseInt($('#menu li').height() * $('#menu li').length);
//I used this coordinate and offset values for debuggin
$('#debugging_mouse_axis').html("X Axis : " + e.pageX + " | Y Axis " + e.pageY);
$('#debugging_status').html(Math.round(((s_top - e.pageY)/100) * mheight / 2));
//Calculate the top value
//This equation is not the perfect, but it 's very close
var top_value = Math.round(( (s_top - e.pageY) /100) * mheight / 2);
//Animate the #menu by chaging the top value
$('#menu').animate({top: top_value}, { queue:false, duration:500});
});
});
</script>
<style>
body {
padding:0;
margin:0 20px;
}
#sidebar {
height:400px;
overflow:hidden;
position:relative;
background-color:#eee;
}
#menu {
width:100%;
list-style:none;
padding:0;
margin:0;
top:0;
position:relative;
height:100%;
width:300px;
}
#menu li {
padding:10px 0;
text-align:right;
display:block;
cursor:hand;
cursor:pointer;
}
#menu li a {
background:url() repeat #1f1f1f;
color:#ddd;
font-family:helvetica, arial, verdana;
font-size:9px;
font-weight:900;
display:inline;
padding:20px 8px 5px 20px;
text-decoration:none;
}
#menu li span {
font-family:georgia, arial;
font-size:9px;
color:#464646;
}
</style>
</head>
<br/><br/><br/><br/><br/>
<div id="debugging_mouse_axis"></div>
<div id="debugging_status"></div>
<div id="sidebar">
<ul id="menu">
<li><a href="#">MENU 1 <span> / 2014</span></a></li>
<li><a href="#">MENU SIZE 2 <span> / 2014</span></a></li>
<li><a href="#">MENU SIZE LONG 3 <span> / 2014</span></a></li>
<li><a href="#">MENU 4 <span> / 2014</span></a></li>
<li><a href="#">MENU SIZE 5 <span> / 2014</span></a></li>
<li><a href="#">MENU SIZE LONG 6 <span> / 2014</span></a></li>
<li><a href="#">MENU 7 <span> / 2014</span></a></li>
<li><a href="#">MENU SIZE 8 <span> / 2014</span></a></li>
<li><a href="#">MENU SIZE LONG 9 <span> / 2014</span></a></li>
<li><a href="#">MENU 10 <span> / 2014</span></a></li>
<li><a href="#">MENU SIZE 11 <span> / 2014</span></a></li>
<li><a href="#">MENU SIZE LONG 12 <span> / 2014</span></a></li>
<li><a href="#">MENU 13 <span> / 2014</span></a></li>
<li><a href="#">SUPER LONG MENU MENU MENU MENU SIZE 14 <span> / 2014</span></a></li>
<li><a href="#">MENU SIZE LONG 15 <span> / 2014</span></a></li>
<li><a href="#">MENU 16 <span> / 2014</span></a></li>
<li><a href="#">MENU SIZE 17 <span> / 2014</span></a></li>
<li><a href="#">MENU SIZE LONG 18 <span> / 2014</span></a></li>
<li><a href="#">MENU 19 <span> / 2014</span></a></li>
<li><a href="#">MENU SIZE 20 <span> / 2014</span></a></li>
<li><a href="#">MENU SIZE LONG 21 <span> / 2014</span></a></li>
<li><a href="#">MENU 22 <span> / 2014</span></a></li>
<li><a href="#">MENU SIZE 5 <span> / 2014</span></a></li>
<li><a href="#">MENU SIZE LONG 23 <span> / 2014</span></a></li>
<li><a href="#">MENU 24 <span> / 2014</span></a></li>
<li><a href="#">MENU SIZE 25 <span> / 2014</span></a></li>
<li><a href="#">MENU SIZE LONG 26 <span> / 2014</span></a></li>
<li><a href="#">MENU 27 <span> / 2014</span></a></li>
<li><a href="#">MENU SIZE 28 <span> / 2014</span></a></li>
<li><a href="#">MENU SIZE LONG 29 <span> / 2014</span></a></li>
<li><a href="#">MENU 30 <span> / 2014</span></a></li>
<li><a href="#">MENU SIZE 31 <span> / 2014</span></a></li>
<li><a href="#">MENU SIZE LONG 32 <span> / 2014</span></a></li>
<li><a href="#">MENU 33 <span> / 2014</span></a></li>
<li><a href="#">MENU SIZE 34 <span> / 2014</span></a></li>
<li><a href="#">MENU SIZE LONG 35 <span> / 2014</span></a></li>
</ul>
</div>
<div style="text-align:center;clear:both">
</div>
</body>
</html>
