<html>
<head>
<meta http-equiv="Content-Type" content="text/htmlcharset=UTF-8" />
<title>CSS+JavaScript三级折叠菜单</title>
<style>
*,body,ul,li,h1,h2 {
margin: 0
padding: 0
list-style: none
}
body {
font: 12px "宋体"
padding-top: 20px
}
#menu {
width: 200px
margin: auto
}
#menu h1 {
cursor: pointer
color: #FFF
font-size: 12px
padding: 5px 0 3px 10px
border: #C60 1px solid
margin-top: 1px
background-color: #F93
}
#menu h2 {
cursor: pointer
color: #777
font-size: 12px
padding: 5px 0 3px 10px
border: #E7E7E7 1px solid
border-top-color: #FFF
background-color: #F4F4F4
}
#menu ul {
padding-left: 15px
height: 100px
border: #E7E7E7 1px solid
border-top: none
overflow: auto
}
#menu ul li {
padding: 5px 0 3px 10px
}
.no {
display: none
}
</style>
<script language="JavaScript">
function ShowMenu(obj, noid) {
var block = document.getElementById(noid)
var n = noid.substr(noid.length - 1)
if (noid.length == 4) {
var ul = document.getElementById(noid.substring(0, 3)).getElementsByTagName("ul")
var h2 = document.getElementById(noid.substring(0, 3)).getElementsByTagName("h2")
for (var i = 0i <h2.lengthi++) {
h2[i].innerHTML = h2[i].innerHTML.replace("+", "-")
h2[i].style.color = ""
}
obj.style.color = "#FF0000"
for (var i = 0i <ul.lengthi++) {
if (i != n) {
ul[i].className = "no"
}
}
} else {
var span = document.getElementById("menu").getElementsByTagName("span")
var h1 = document.getElementById("menu").getElementsByTagName("h1")
for (var i = 0i <h1.lengthi++) {
h1[i].innerHTML = h1[i].innerHTML.replace("+", "-")
h1[i].style.color = ""
}
obj.style.color = "#0000FF"
for (var i = 0i <span.lengthi++) {
if (i != n) {
span[i].className = "no"
}
}
}
if (block.className == "no") {
block.className = ""
obj.innerHTML = obj.innerHTML.replace("-", "+")
} else {
block.className = "no"
obj.style.color = ""
}
}
</script>
</head>
<body>
<div id="menu">
<h1 onClick="javascript:ShowMenu(this,'NO0')">- 一级菜单A</h1>
<span id="NO0" class="no">
<h2 onClick="javascript:ShowMenu(this,'NO00')">- 一级菜单A_1</h2>
<ul id="NO00" class="no">
<li>一级菜单A_0</li>
<li>一级菜单A_1</li>
<li>一级菜单A_2</li>
<li>一级菜单A_3</li>
<li>一级菜单A_4</li>
<li>一级菜单A_5</li>
</ul>
<h2 onClick="javascript:ShowMenu(this,'NO01')">- 一级菜单A_2</h2>
<ul id="NO01" class="no">
<li>一级菜单A_0</li>
<li>一级菜单A_1</li>
<li>一级菜单A_2</li>
<li>一级菜单A_3</li>
<li>一级菜单A_4</li>
</ul>
<h2 onClick="javascript:ShowMenu(this,'NO02')">- 一级菜单A_3</h2>
<ul id="NO02" class="no">
<li>一级菜单A_0</li>
<li>一级菜单A_1</li>
<li>一级菜单A_2</li>
<li>一级菜单A_3</li>
<li>一级菜单A_4</li>
<li>一级菜单A_5</li>
<li>一级菜单A_6</li>
</ul>
<h2 onClick="javascript:ShowMenu(this,'NO03')">- 一级菜单A_4</h2>
<ul id="NO03" class="no">
<li>一级菜单A_0</li>
<li>一级菜单A_1</li>
<li>一级菜单A_2</li>
<li>一级菜单A_3</li>
<li>一级菜单A_4</li>
<li>一级菜单A_5</li>
<li>一级菜单A_6</li>
<li>一级菜单A_7</li>
</ul>
</span>
<h1 onClick="javascript:ShowMenu(this,'NO1')">- 二级菜单B</h1>
<span id="NO1" class="no">
<h2 onClick="javascript:ShowMenu(this,'NO10')">- 二级菜单B_1</h2>
<ul id="NO10" class="no">
<li>二级菜单B_0</li>
<li>二级菜单B_1</li>
<li>二级菜单B_2</li>
<li>二级菜单B_3</li>
<li>二级菜单B_4</li>
<li>二级菜单B_5</li>
<li>二级菜单B_6</li>
<li>二级菜单B_7</li>
</ul>
<h2 onClick="javascript:ShowMenu(this,'NO11')">- 二级菜单B_2</h2>
<ul id="NO11" class="no">
<li>二级菜单B_0</li>
<li>二级菜单B_1</li>
<li>二级菜单B_2</li>
<li>二级菜单B_3</li>
<li>二级菜单B_4</li>
<li>二级菜单B_5</li>
<li>二级菜单B_6</li>
<li>二级菜单B_7</li>
</ul>
</span>
<h1 onClick="javascript:ShowMenu(this,'NO2')">- 三级菜单C</h1>
<span id="NO2" class="no">
<h2 onClick="javascript:ShowMenu(this,'NO20')">- 三级菜单C_1</h2>
<ul id="NO20" class="no">
<li>三级菜单C_0</li>
<li>三级菜单C_1</li>
<li>三级菜单C_2</li>
<li>三级菜单C_3</li>
<li>三级菜单C_4</li>
<li>三级菜单C_5</li>
<li>三级菜单C_6</li>
<li>三级菜单C_7</li>
<li>三级菜单C_8</li>
<li>三级菜单C_9</li>
</ul>
<h2 onClick="javascript:ShowMenu(this,'NO21')">- 三级菜单C_2</h2>
<ul id="NO21" class="no">
<li>三级菜单C_0</li>
<li>三级菜单C_1</li>
<li>三级菜单C_2</li>
<li>三级菜单C_3</li>
<li>三级菜单C_4</li>
</ul>
</span>
<h1 onClick="javascript:ShowMenu(this,'NO3')">- 四级菜单D</h1>
<span id="NO3" class="no">
<h2 onClick="javascript:ShowMenu(this,'NO30')">- 四级菜单D_1</h2>
<ul id="NO30" class="no">
<li>四级菜单D_0</li>
<li>四级菜单D_1</li>
<li>四级菜单D_2</li>
<li>四级菜单D_3</li>
</ul>
<h2 onClick="javascript:ShowMenu(this,'NO31')">- 四级菜单D_2</h2>
<ul id="NO31" class="no">
<li>四级菜单D_0</li>
<li>四级菜单D_1</li>
<li>四级菜单D_2</li>
<li>四级菜单D_3</li>
<li>四级菜单D_4</li>
<li>四级菜单D_5</li>
</ul>
</span>
</div>
</body>
</html>
用html和css实现标签折叠，代码如下：
<!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/htmlcharset=gb2312" />
<title>用html和css实现标签折叠</title>
</head>
<body>
<ul id="fm">
<li><a href="#"><h1>折叠标签A</h1>
<span>这里是描述标签A</span>
<span>这里是描述标签A</span>
<span>这里是描述标签A</span>
</a></li>
<li><a href="#"><h1>折叠标签B</h1>
<span>这里是描述标签B</span>
<span>这里是描述标签B</span>
<span>这里是描述标签B</span></a>
<li><a href="#"><h1>折叠标签C</h1>
<span>这里是描述标签C</span>
<span>这里是描述标签C</span>
<span>这里是描述标签C</span></a>
<li><a href="#"><h1>折叠标签D</h1>
<span>这里是描述标签D</span>
<span>这里是描述标签D</span>
<span>这里是描述标签D</span></a>
</ul>
</body>
</html>
CSS样式为：
<style type="text/css">
#fm{
overflow:hidden
background-color:#FFCCCC
width:200px
height:500px
overflow:hidden
}
#fm h1{
margin:0px
color:#FF3333
font-size:14px
}
#fm li{
list-sytle-type:none
display:block
width:178px
border:1px solid #00CCCC
border-bottom-width:0px
}
#fm li.end{
border-bottom-width:1px
}
#fm li a{
display:block
text-decoration:none
width:100%
padding:10px
}
#fm li a span{
display:none
color:#000000
font-size:12px
padding-top:10px
}
#fm li a:hover{
background:#fff
}
#fm li a:hover span{
display:block
cursor:hand
}
</style>
效果如图：
以上就是用html和css实现标签折叠的解决方法。
<table border="0" cellspacing="0" cellpadding="0"><tr>
<td scope="row"><table border="1">
<tr>
<td id="showbfq" height="20" align="top" onclick="if(bfq.style.display=='none'){bfq.style.display=''showbfq.innerText='优质'}
else{bfq.style.display='none'showbfq.innerText='点击更多'}">点击更多</td>
</tr>
<tr>
<td height="80" align="center" name="bfq" id="bfq" style="display:none">aaa</td>
</tr>
</table></td></tr>
<tr><td><table border="1">
<tr>
<td id="showbfq1" height="20" align="top" onclick="if(bfq1.style.display=='none'){bfq1.style.display=''showbfq1.innerText='优质'}
else{bfq1.style.display='none'showbfq1.innerText='点击更多'}">点击更多</td>
</tr>
<tr>
<td height="80" align="center" name="bfq1" id="bfq1" style="display:none">bbb</td>
</tr>
</table></td></tr>
<tr><td><table border="1">
<tr>
<td id="showbfq2" height="20" align="top" onclick="if(bfq2.style.display=='none'){bfq2.style.display=''showbfq2.innerText='优质'}
else{bfq2.style.display='none'showbfq2.innerText='点击更多'}">点击更多</td>
</tr>
<tr>
<td height="80" align="center" name="bfq2" id="bfq2" style="display:none">ccc</td>
</tr>
</table></td></tr>
</table>
一样的，用一个大表格，把它们竖向的框起来。
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