這篇文章主要介紹了jquery實(shí)現(xiàn)鼠標(biāo)滑過(guò)顯示二級(jí)下拉菜單效果,通過(guò)jquery操作鼠標(biāo)事件及頁(yè)面樣式動(dòng)態(tài)變換實(shí)現(xiàn)該功能,非常具有實(shí)用價(jià)值,需要的朋友可以參考下

本文實(shí)例講述了jquery實(shí)現(xiàn)鼠標(biāo)滑過(guò)顯示二級(jí)下拉菜單效果。分享給大家供大家參考。具體如下：

這是一款jquery實(shí)現(xiàn)的下拉菜單，當(dāng)鼠標(biāo)移在主菜單上的時(shí)候，向下滑出二級(jí)子菜單，采用UL LI結(jié)構(gòu)，便于修改完善，我覺(jué)得是很實(shí)用的菜單，希望大家平時(shí)能用得上。

運(yùn)行效果截圖如下：

在線演示地址如下：

http://demo.jb51.net/js/2015/jquery-mouse-over-show-menu-codes/

具體代碼如下：

<!DOCTYPE html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jquery下拉菜單</title>
<script type="text/javascript" src="jquery-1.6.2.min.js"></script>
<style>
* { margin: 0; padding: 0; }
body {font-family: Arial, Tahoma, sans-serif; font-size: 11px; color: #232323; }
.wrap { width: 800px; margin: 0 auto; }
#nav { margin: 0; padding: 0; list-style: none; border-left: 1px solid #d5dce8; border-right: 1px solid #d5dce8; border-bottom: 1px solid #d5dce8; border-bottom-left-radius: 4px; -moz-border-radius-bottomleft: 4px; -webkit-border-bottom-left-radius: 4px; border-bottom-right-radius: 4px; -moz-border-radius-bottomright: 4px; -webkit-border-bottom-right-radius: 4px; height: 50px; padding-left: 15px; padding-right: 15px; background: #edf3f7; }
#nav li { float: left; display: block; background: none; position: relative; z-index: 999; margin: 0 1px; }
#nav li a { display: block; padding: 0; font-weight: 700; line-height: 50px; text-decoration: none; color: #818ba3; zoom: 1; border-left: 1px solid transparent; border-right: 1px solid transparent; padding: 0px 12px; }
#nav li a:hover, #nav li a.hov { background-color: #fff; border-left: 1px solid #d5dce8; border-right: 1px solid #d5dce8; color: #576482; }
#nav ul { position: absolute; left: 1px; display: none; margin: 0; padding: 0; list-style: none; -moz-box-shadow: 0 1px 3px rgba(0,0,0,0.2); -o-box-shadow: 0 1px 3px rgba(0,0,0,0.2); box-shadow: 0 1px 3px rgba(0,0,0,0.2); -webkit-box-shadow: 0 1px 3px rgba(0,0,0,0.2); padding-bottom: 3px; }
#nav ul li { width: 180px; float: left; border-top: 1px solid #fff; text-align: left; }
#nav ul li:hover { border-left: 0px solid transparent; border-right: 0px solid transparent; }
#nav ul a { display: block; height: 20px; line-height: 20px; padding: 8px 5px; color: #666; border-bottom: 1px solid transparent; text-transform: uppercase; color: #797979; font-weight: normal; }
#nav ul a:hover { text-decoration: none; border-right-color: transparent; border-left-color: transparent; background: transparent; color: #4e4e4e; }
* html #nav ul { margin: 0 0 0 -2px; }
.clearfix:after { content: "."; display: block; clear: both; visibility: hidden; line-height: 0; height: 0; }
.clearfix { display: inline-block; }
html[xmlns] .clearfix { display: block; }
* html .clearfix { height: 1%; }
</style>
</head>
<body>
<div class="wrap">
 <ul id="nav">
  <li><a href="#">網(wǎng)站主頁(yè)</a></li>
  <li><a href="#">關(guān)于我</a>
   <ul>
    <li><a href="#">Company</a></li>
    <li><a href="#">Authors</a></li>
    <li><a href="#">Advertising</a></li>
   </ul>
  </li>
  <li><a href="#">RSS訂閱</a>
   <ul>
    <li><a href="#">PSD</a></li>
    <li><a href="#">Patterns</a></li>
    <li><a href="#">Icons</a></li>
   </ul>   
  </li>
  <li><a href="#">精美博文</a>
   <ul>
    <li><a href="#">HTML5</a></li>
    <li><a href="#">CSS3</a></li>
    <li><a href="#">jQuery</a></li>
    <li><a href="#">MySQL</a></li>
   </ul>
  </li>
  <li><a href="#">Web工具</a>
   <ul>
    <li><a href="#">Performance</a></li>
    <li><a href="#">CMS Plugins</a></li>
    <li><a href="#">Cheat Sheets</a></li>
   </ul>
  </li>
  <li><a href="#">Originals</a>
   <ul>
    <li><a href="#">Website Design</a></li>
    <li><a href="#">Mobile</a></li>
   </ul>
  </li>
 </ul>
</div>
<script type="text/javascript">
$(document).ready(function() { 
 $('#nav li').hover(function() {
  $('ul', this).slideDown(200);
  $(this).children('a:first').addClass("hov");
 }, function() {
  $('ul', this).slideUp(100);
  $(this).children('a:first').removeClass("hov");  
 });
});
</script>
</body>
</html>

希望本文所述對(duì)大家的jquery程序設(shè)計(jì)有所幫助。

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