<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>CSS下拉菜单</title>
<style type="text/css">
*{ margin:0px; padding:0px;}
 #menu{ background-color:#eee; width:600px; height:40px; margin:0 auto;}
 ul{ list-style:none;}
 ul li{ line-height:40px; text-align:center; position:relative; float:left; }
 a{ text-decoration:none; color:#000; display:block; width:90px;}
 a:hover{ color:#FFF; background-color:#666;}
 ul li ul li{ float:none;margin-top:2px; background-color:#eee; } 
 ul li ul{display:none;width:90px; position:absolute;  left:0;top:40px;  }
 ul li:hover ul{display:block;}
</style>
</head>

<body>
<div id="menu">
<ul>
  <li><a href="#">首页</a></li>
  <li><a href="#">课程大厅</a>
    <ul>
        <li><a href="#">JavaScript</a></li>
        <li><a href="#">jQuery</a></li>
    </ul>
    
    
    
  </li>
  <li><a href="#">学习中心</a>
    <ul>
      <li><a href="#">视频学习</a></li>
      <li><a href="#">案例学习</a></li>
      <li><a href="#">交流平台</a></li>
    </ul>
  </li>
  <li><a href="#">经典案例</a></li>
  <li><a href="#">关于我们</a></li>
</ul>
</div> 
</body>
</html>

 

 

<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>JavaScript下拉菜单</title>
<style type="text/css">
*{ margin:0px; padding:0px;}
body{ font-family:Verdana, Geneva, sans-serif; font-size:14px;}
#nav{ width:600px; height:40px; background-color:#eee; margin:0 auto;}
ul{ list-style:none;}
ul li{ float:left; line-height:40px; text-align:center; width:100px;}
a{ text-decoration:none; color:#000; display:block;}
a:hover{ color:#F00; background-color:#666;}
ul li ul li{ float:none;background-color:#eee; margin:2px 0px;}
ul li ul{display:none; }
</style>
 <script type="text/javascript">
        function ShowSub(li) {
            var subMenu = li.getElementsByTagName("ul")[0]  ;
            subMenu.style.display = "block";
        }

        function HideSub(li) {
            var subMenu = li.getElementsByTagName("ul")[0];
            subMenu.style.display = "none";
        }

    </script>
</head>

<body>
<div id="nav">
<ul>
  <li><a href="#">首页</a></li>
  <li onmouseover="ShowSub(this)" onmouseout="HideSub(this)" ><a href="#">课程大厅</a>
     <ul>
         <li><a href="#">JavaScript</a></li>
         <li><a href="#">Html/CSS</a></li>
     </ul>  
  </li>
  <li onmouseover="ShowSub(this)" onmouseout="HideSub(this)" ><a href="#">学习中心</a>
      <ul>
         <li><a href="#">视频学习</a></li>
         <li><a href="#">实例练习</a></li>
         <li><a href="#">问与答</a></li>
     </ul>  
  
  </li>
  <li><a href="#">经典案例</a></li>
  <li><a href="#">关于我们</a></li>
</ul>
</div>
</body>
</html>

 

 

<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery下拉菜单</title>
<style type="text/css">
*{ margin:0px; padding:0px;}
body{ font-family:Verdana, Geneva, sans-serif; font-size:14px;}
#nav{ width:600px; height:40px; background-color:#eee; margin:0 auto;}
ul{ list-style:none;}
ul li{ float:left; line-height:40px; text-align:center; width:100px;}
a{ text-decoration:none; color:#000; display:block;}
a:hover{ color:#F00; background-color:#666;}
ul li ul li{ float:none;background-color:#eee; margin:2px 0px;}
ul li ul{display:none; }
</style>
 <script type="text/javascript">
        function ShowSub(li) {
            var subMenu = li.getElementsByTagName("ul")[0]  ;
            subMenu.style.display = "block";
        }

        function HideSub(li) {
            var subMenu = li.getElementsByTagName("ul")[0];
            subMenu.style.display = "none";
        }

    </script>
</head>

<body>
<div id="nav">
<ul>
  <li><a href="#">首页</a></li>
  <li onmouseover="ShowSub(this)" onmouseout="HideSub(this)" ><a href="#">课程大厅</a>
     <ul>
         <li><a href="#">JavaScript</a></li>
         <li><a href="#">Html/CSS</a></li>
     </ul>  
  </li>
  <li onmouseover="ShowSub(this)" onmouseout="HideSub(this)" ><a href="#">学习中心</a>
      <ul>
         <li><a href="#">视频学习</a></li>
         <li><a href="#">实例练习</a></li>
         <li><a href="#">问与答</a></li>
     </ul>  
  
  </li>
  <li><a href="#">经典案例</a></li>
  <li><a href="#">关于我们</a></li>
</ul>
</div>
</body>
</html>

 

posted on 2016-01-18 10:15  fuhao31  阅读(116)  评论(0编辑  收藏  举报