SoFunction
Updated on 2025-03-10

JavaScript implements simple secondary navigation menu example

This article describes the method of implementing a simple secondary navigation menu in JavaScript. Share it for your reference. The details are as follows:

<!DOCTYPE html PUBliC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http:///TR/xhtml1/DTD/">
<html xmlns="http:///1999/xhtml" lang="zh-CN">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>cssMenu Demo</title>
<style type="text/css">
<!--
*{margin:0;padding:0;border:0;}
body {
font-family: arial, Song style, serif;
     font-size:12px;
}
#nav {
  line-height: 24px; list-style-type: none; background:#666;
}
#nav a {
display: block; width: 80px; text-align:center;
}
#nav a:link  {
color:#666; text-decoration:none;
}
#nav a:visited  {
color:#666;text-decoration:none;
}
#nav a:hover  {
color:#FFF;text-decoration:none;font-weight:bold;
}
#nav li {
float: left; width: 80px; background:#CCC;
}
#nav li a:hover{
background:#999;
}
#nav li ul {
line-height: 27px; list-style-type: none;text-align:left;
left: -999em; width: 180px; position: absolute;
}
#nav li ul li{
float: left; width: 180px;
background: #F6F6F6;
}
#nav li ul a{
display: block; width: 180px;width: 156px;
text-align:left;padding-left:24px;
}
#nav li ul a:link  {
color:#666; text-decoration:none;
}
#nav li ul a:visited  {
color:#666;text-decoration:none;
}
#nav li ul a:hover  {
color:#F3F3F3;text-decoration:none;font-weight:normal;
background:#C00;
}
#nav li:hover ul {
left: auto;
}
#nav  ul {
left: auto;
}
#content {
clear: left;
}
-->
</style>
<script type=text/javascript>
<!--//--><![CDATA[//><!--
function menuFix() {
var sfEls = ("nav").getElementsByTagName("li");
for (var i=0; i<; i++) {
  sfEls[i].onmouseover=function() {
  +=(>0? " ": "") + "sfhover";
  }
  sfEls[i].onMouseDown=function() {
  +=(>0? " ": "") + "sfhover";
  }
  sfEls[i].onMouseUp=function() {
  +=(>0? " ": "") + "sfhover";
  }
  sfEls[i].onmouseout=function() {
  =(new RegExp("( ?|^)sfhover\b"),
"");
  }
}
}
=menuFix;
//--><!]]>
</script>
</head>
<body>
<ul >
&lt;li&gt;&lt;a href="#">Product Introduction</a>&lt;ul&gt;
&lt;li&gt;&lt;a href="#">Product One</a></li>&lt;li&gt;&lt;a href="#">Product One</a></li>&lt;li&gt;&lt;a href="#">Product One</a></li>&lt;li&gt;&lt;a href="#">Product One</a></li>&lt;li&gt;&lt;a href="#">Product One</a></li>&lt;li&gt;&lt;a href="#">Product One</a></li>&lt;/ul&gt;
&lt;/li&gt;
&lt;li&gt;&lt;a href="#">Service introduction</a>&lt;ul&gt;
&lt;li&gt;&lt;a href="#">Service 2</a></li>&lt;li&gt;&lt;a href="#">Service 2</a></li>&lt;li&gt;&lt;a href="#">Service 2</a></li>&lt;li&gt;&lt;a href="#">Service 2 Service 2</a></li>&lt;li&gt;&lt;a href="#">Service 2Service 2Service 2</a></li>&lt;li&gt;&lt;a href="#">Service 2</a></li>&lt;/ul&gt;
&lt;/li&gt;
&lt;li&gt;&lt;a href="#">Successful Cases</a>&lt;ul&gt;
&lt;li&gt;&lt;a href="#">Case Three</a></li>&lt;li&gt;&lt;a href="#">Case</a></li>&lt;li&gt;&lt;a href="#">Case Three Case Three</a></li>&lt;li&gt;&lt;a href="#">Case Three Case Three Case Three</a></li>&lt;/ul&gt;
&lt;/li&gt;
&lt;li&gt;&lt;a href="#">About Us</a>&lt;ul&gt;
&lt;li&gt;&lt;a href="#">We Four</a></li>&lt;li&gt;&lt;a href="#">We Four</a></li>&lt;li&gt;&lt;a href="#">We Four</a></li>&lt;li&gt;&lt;a href="#">We Four 111</a></li>&lt;/ul&gt;
&lt;/li&gt;
&lt;li&gt;&lt;a href="#">Online Demo</a>&lt;ul&gt;
&lt;li&gt;&lt;a href="#">Demo</a></li>&lt;li&gt;&lt;a href="#">Demo</a></li>&lt;li&gt;&lt;a href="#">Demo</a></li>&lt;li&gt;&lt;a href="#">Demo Demo</a></li>&lt;li&gt;&lt;a href="#">Demo Demo</a></li>&lt;li&gt;&lt;a href="#">Demo Demo</a></li>&lt;li&gt;&lt;a href="#">Demo Demo</a></li>&lt;li&gt;&lt;a href="#">Demo Demo Demo Demo Demo</a></li>&lt;/ul&gt;
&lt;/li&gt;
&lt;li&gt;&lt;a href="#">Contact Us</a>&lt;ul&gt;
&lt;li&gt;&lt;a href="#">Contact Contact Contact Contact Contact Contact</a></li>&lt;li&gt;&lt;a href="#">Contact and contact</a></li>&lt;li&gt;&lt;a href="#">Contact</a></li>&lt;li&gt;&lt;a href="#">Contact</a></li>&lt;li&gt;&lt;a href="#">Contact</a></li>&lt;li&gt;&lt;a href="#">Contact and contact</a></li>&lt;li&gt;&lt;a href="#">Contact and contact</a></li>&lt;/ul&gt;
&lt;/li&gt;
&lt;/ul&gt;
&lt;/body&gt;
&lt;/html&gt;

I hope this article will be helpful to everyone's JavaScript programming.