本文實例講述了JS實現的豎向折疊菜單代碼。分享給大家供大家參考,具體如下:
先來看看運行效果截圖:

在線演示地址如下:
http://demo.jb51.net/js/2015/js-hxzd-menu-demo/
具體代碼如下:
<!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>
<title>豎向的折疊菜單</title>
<script language = JavaScript>
function showmenu(id) {
var list = document.getElementById("list"+id);
var menu = document.getElementById("menu"+id)
if (list.style.display=="none") {
document.getElementById("list"+id).style.display="block";
menu.className = "title1";
}else {
document.getElementById("list"+id).style.display="none";
menu.className = "title";
}
}
</script>
<style type="text/css">
<!--
*{margin:0;padding:0;list-style:none;font-size:14px}
#nav{margin:10px;text-align:center;line-height:25px;width:200px;}
.title{background:#336699;color:#fff;border-bottom:1px solid #fff;cursor:pointer;}
.title1{background:#888;color:#000;border-bottom:1px solid #666;cursor:pointer;}
.content li{color:#336699;background:#ddd;border-bottom:1px solid #fff;}
-->
</style>
</head>
<body>
<div id="nav">
<div class="title" id="menu1" onclick="showmenu('1') ">Ajax下載</div>
<div id="list1" class="content" style="display:none">
<ul>
<li>jQuery</li>
<li>Extjs</li>
<li>Mootools</li>
</ul>
</div>
<div class="title" id="menu2" onclick="showmenu('2')">網頁代碼</div>
<div id="list2" class="content" style="display:none">
<ul>
<li>菜單導航</li>
<li>層和布局</li>
<li>圖片切換</li>
</ul>
</div>
</div>
</body>
</html>
希望本文所述對大家JavaScript程序設計有所幫助。