JavaScript实现带箭头标识的多级下拉菜单效果

时间:2020-05-14 企鹅人气:0

本文实例讲述了JavaScript实现带箭头标识的多级下拉菜单效果。分享给大家供大家参考。具体如下：

这是一个支持多级显示的JS菜单，鼠标移向带有小三角的菜单项，可下拉出二级子菜单项，在该主菜单的上方会显示标记，指引当前的位置，本菜单代码使用了一个JS类，可根据代码地址自行下载，这个菜单未在网上测试，用在自己的网站里可能要修改代码。

运行效果截图如下：

在线演示地址如下：

http:/https://img.qb5200.com/download-x/demo.jb51.net/js/2015/js-focus-m-select-menu-nav-codes/

具体代码如下：

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>多级展开的横向菜单</title>
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<!--[imstyles] *** Infinite Menu Styles: Keep this section in the document head for full validation. -->
<style type="text/css">
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 #imenus0 li:hover .imeam span,#imenus0 li a.iactive .imeamj span {background-image:url(images/sample3_main_arrow.gif); background-repeat:no-repeat;background-position:top left;}
 #imenus0 ul .imeas span,#imenus0 ul .imeasj span {background-image:url(images/sample3_sub_arrow.gif); width:5px; height:7px; left:-5px; top:3px; background-repeat:no-repeat;background-position:top left;}
 #imenus0 ul li:hover .imeas span,#imenus0 ul li a.iactive .imeasj span {background-image:url(images/sample3_sub_arrow.gif); background-repeat:no-repeat;background-position:top left;}
 #imouter0 {background-color:#ffffff; border-style:none; border-color:#6a6a6a; border-width:1px; padding:0px; margin:0px; }
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 #imenus0 li a.iactive {}
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 #imenus0 ul li a.ihover {color:#000000; text-decoration:underline; }
 #imenus0 ul li a.iactive {background-color:#ffffff; }
</style><!--end-->
</head>
<body>
<div class="imrcmain0 imgl" style="width:580px;z-index:999999;position:relative;"><div class="imcm imde" id="imouter0"><ul id="imenus0">
<li class="imatm" style="width:145px;"><a class="" href="#"><span class="imea imeam"><span></span></span>Who We Are</a>
 <div class="imsc"><div class="imsubc" style="width:145px;top:0px;left:0px;"><ul style="">
 <li><a href="#">Overview</a></li>
 <li><a href="#">Mission & Goals</a></li>
 <li><a href="#">History</a></li>
 <li><a href="#">Management</a></li>
 <li><a href="#">Working at Tyco</a></li>
 <li><a href="#">Press Center</a></li>
 <li><a href="#"><span class="imea imeas"><span></span></span>Worldwide</a>
  <div class="imsc"><div class="imsubc" style="width:140px;top:-23px;left:132px;"><ul style="">
  <li><a href="#">Europe</a></li>
  <li><a href="#">Asia</a></li>
  <li><a href="#">US & Canada</a></li>
  <li><a href="#">Mexico</a></li>
  <li><a href="#">Australia</a></li>
  <li><a href="#">Middle East</a></li>
  </ul></div></div></li>
 <li><a href="#"><span class="imea imeas"><span></span></span>Board of Directors</a>
  <div class="imsc"><div class="imsubc" style="width:140px;top:-23px;left:132px;"><ul style="">
  <li><a href="#">Overview</a></li>
  <li><a href="#">Electronics</a></li>
  <li><a href="#">Fire & Security</a></li>
  <li><a href="#">Healthcare</a></li>
  <li><a href="#">Plastics & Adhesives</a></li>
  <li><a href="#">Engineered Producs</a></li>
  <li><a href="#">Tyco Worldwide</a></li>
  </ul></div></div></li>
 <li><a href="#">Customers</a></li>
 </ul></div></div></li>
<li class="imatm" style="width:145px;"><a href="#"><span class="imea imeam"><span></span></span>Our Commitment</a>
 <div class="imsc"><div class="imsubc" style="width:146px;top:0px;left:-1px;"><ul style="">
 <li><a href="#">Overview</a></li>
 <li><a href="#">People & Values</a></li>
 <li><a href="#">Governance</a></li>
 <li><a href="#">Community</a></li>
 <li><a href="#">Environmental</a></li>
 </ul></div></div></li>
<li class="imatm" style="width:145px;"><a href="#"><span class="imea imeam"><span></span></span>Our Business</a>
 <div class="imsc"><div class="imsubc" style="width:146px;top:0px;left:0px;"><ul style="">
 <li><a href="#">Overview</a></li>
 <li><a href="#">Electronics</a></li>
 <li><a href="#">Fire & Security</a></li>
 <li><a href="#">Healthcare</a></li>
 <li><a href="#">Plastics & Adhesives</a></li>
 <li><a href="#">Engineered Producs</a></li>
 <li><a href="#">Tyco Worldwide</a></li>
 </ul></div></div></li>
<li class="imatm" style="width:145px;"><a href="#"><span class="imea imeam"><span></span></span>Investors</a>
 <div class="imsc"><div class="imsubc" style="width:146px;top:0px;left:-1px;"><ul style="">
 <li><a href="#">Overview</a></li>
 <li><a href="#">Stock Quotes</a></li>
 </ul></div></div></li>
</ul><div class="imclear"> </div></div></div>
<script language="JavaScript" src="images/ocscript.js" type="text/javascript"></script>
</body>
</html>

希望本文所述对大家的javascript程序设计有所帮助。

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