GIF動態效果：
代碼部分：
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<script src="jquery.js"></script>
<style>
.dropdown {
position: relative;
display: inline-block;
height: 30px;
width: 70px;
background-color: red;
text-align: center;
font-size: 15px;
}
.dropdown:hover {
position: relative;
display: inline-block;
height: 30px;
width: 70px;
background-color: blue;
text-align: center;
font-size: 15px;
}
.dropdown-content {
display: none;
position: absolute;
height: 30px;
width: 70px;
background-color: red;
text-align: center;
z-index: 1;
font-size: 15px;
}
.dropdown:hover .dropdown-content {
display: block;
height: 120px;
width: 70px;
background-color: red;
text-align: center;
font-size: 15px;
top: 30px;
}
.dropdown1 {
position: relative;
display: inline-block;
height: 30px;
width: 70px;
background-color: red;
text-align: center;
font-size: 15px;
}
.dropdown1:hover {
position: relative;
display: inline-block;
height: 30px;
width: 70px;
background-color: blue;
text-align: center;
font-size: 15px;
}
.dropdown-content1 {
display: none;
position: absolute;
height: 30px;
width: 70px;
background-color: red;
text-align: center;
z-index: 1;
font-size: 15px;
}
.dropdown1:hover .dropdown-content1 {
display: block;
height: 120px;
width: 70px;
background-color: red;
text-align: center;
font-size: 15px;
top: 30px;
}
.dropdown2 {
position: relative;
display: inline-block;
height: 30px;
width: 70px;
background-color: red;
text-align: center;
font-size: 15px;
}
.dropdown2:hover {
position: relative;
display: inline-block;
height: 30px;
width: 70px;
background-color: blue;
text-align: center;
font-size: 15px;
}
.dropdown-content2 {
display: none;
position: absolute;
height: 30px;
width: 70px;
background-color: red;
text-align: center;
z-index: 1;
font-size: 15px;
}
.dropdown2:hover .dropdown-content2 {
display: block;
height: 120px;
width: 70px;
background-color: red;
text-align: center;
font-size: 15px;
top: 30px;
}
</style>
</head>
<body>
<div class="dropdown">
<table type>
<tr><td><span>首頁</span></td></tr>
</table>
<div class="dropdown-content">
<p>這是菜單1</p>
<p>這是菜單2</p>
<p>這是菜單3</p>
</div>
</div>
<div class="dropdown1">
<table>
<tr><td><span>首頁</span></td></tr>
</table>
<div class="dropdown-content1">
<p>這是菜單1</p>
<p>這是菜單2</p>
<p>這是菜單3</p>
</div>
</div>
<div class="dropdown2">
<table>
<tr><td><span>首頁</span></td></tr>
</table>
<div class="dropdown-content2">
<p>這是菜單1</p>
<p>這是菜單2</p>
<p>這是菜單3</p>
</div>
</div>
</body>
</html>
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<script src="jquery.js"></script>
<style>
.two_bar {
margin-left:80px;
display:none;
}
li {
list-style:none;
}
.two_bar li,.one_bar {
display:block;
text-align:center;
font-size:16px;
background-color:#55339e;
color:#ffffff;
border-bottom:1px solid #ffffff;
border-radius:10px;
line-height:38px;
overflow:hidden;
height:38px;
width:70px;
}
a:link,a:visited,a:hover,a:active {
text-decoration:none;
}
</style>
</head>
<div class="top_bar">
<ul>
<a href="###" class="one_bar">首頁</a>
<ul class="two_bar">
<li>這是菜單1</li>
<li>這是菜單1</li>
<li>這是菜單1</li>
</ul>
<a href="###" class="one_bar">首頁</a>
<ul class="two_bar">
<li>這是菜單1</li>
<li>這是菜單1</li>
<li>這是菜單1</li>
</ul>
<a href="###" class="one_bar">首頁</a>
<ul class="two_bar">
<li>這是菜單1</li>
<li>這是菜單1</li>
<li>這是菜單1</li>
</ul>
</ul>
</div>
<script type="text/javascript">
$(function(){
$(document).ready(function(){
$(".one_bar").hover(function(){
$(this).next().slideToggle();
$(this).parent().siblings().children("ul").slideUp();
});
});
});
</script>
</body>
</html>