js实现适用于素材网站的黑色多级菜单导航条效果

司徒寒

2023-03-14

本文向大家介绍js实现适用于素材网站的黑色多级菜单导航条效果，包括了js实现适用于素材网站的黑色多级菜单导航条效果的使用技巧和注意事项，需要的朋友参考一下

本文实例讲述了js实现适用于素材网站的黑色多级菜单导航条效果。分享给大家供大家参考。具体如下：

这是一款适用于素材网站的黑色多级菜单导航条，无需jQuery，采用CSS+javaScript来实现，整体效果非常棒，用来学习CSS也是很不错的。

运行效果截图如下：

在线演示地址如下：

http://demo.jb51.net/js/2015/js-black-color-nav-style-codes/

具体代码如下：

<!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/html; charset=gb2312" />
<title>css+js打造超酷黑灰色二级横向下拉导航菜单</title>
<style>
body{margin:0;padding:0;color:#000;}
#mainHeader{width:100%;z-index:3020;position:relative;}
#mainHeader ul,#mainHeader li{position:relative;margin:0;padding:0;list-style:none;z-index:3020;}
#headerTop{background:#222;background:linear-gradient(bottom,#171717 0,#222 10%);background:-moz-linear-gradient(bottom,#171717 0,#222 10%);background:-webkit-gradient(linear,left bottom,left top,color-stop(0,#171717),color-stop(10%,#222));z-index:3020;height:52px;}
#headerBottom{border-top:1px solid #4f4f4f;border-bottom:1px solid #000;position:relative;height:34px;background:#2c2c2c;background:linear-gradient(top,#3c3c3c 0,#1d1d1d 100%);background:-moz-linear-gradient(top,#3c3c3c 0,#1d1d1d 100%);background:-webkit-gradient(linear,left top,left bottom,color-stop(0,#3c3c3c),color-stop(100%,#1d1d1d));z-index:3010;}
#navmenu{width:900px;margin:0 auto;position:relative;font-size:14px;}
#navmenu li{display:block;position:relative;float:left;border-top:0;border-left:1px solid #454545;border-bottom:0;border-right:1px solid #151515;xheight:18px;}
#navmenu li a{text-shadow:1px 1px 1px black;display:block;padding:8px 18px;color:#fff;text-decoration:none;white-space:nowrap;}
#navmenu li a:hover{padding-top:5px;border-top:3px solid #ff0000;}
.newSash{position:relative;}
.newSash .newSashSpan{background:url(images/newSashRed.gif) top left no-repeat;width:26px;height:26px;position:absolute;top:-1px;right:0;}
.downArrow{display:block;border-color:#fff transparent transparent transparent;border-style:solid;border-width:3px;height:0;width:0;position:absolute;top:16px;right:8px;_border:none;}
#navmenu div{position: absolute;visibility: hidden; padding: 0;margin-left:-1px;margin-top:2px; background: #313131;border:1px solid #222;}
#navmenudiv a{position: relative;display: block;margin: 0;padding: 8px 10px;border-bottom:1px solid #fff;width: auto;white-space: nowrap;text-align: left;text-decoration: none;background: #666;color: #fff;}
#navmenu div a:hover{background: #222;border-top:none;border-left:3px solid #ff0000;color: #FFF;padding: 8px 10px;}
</style>
<script type="text/javascript">
var timeout  = 500;
var closetimer  = 0;
var ddmenuitem = 0;
function mopen(id)
{
 mcancelclosetime();
 if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
 ddmenuitem = document.getElementById(id);
 ddmenuitem.style.visibility = 'visible';
}
function mclose()
{
 if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
}
function mclosetime()
{
 closetimer = window.setTimeout(mclose, timeout);
}
function mcancelclosetime()
{
 if(closetimer)
 {
  window.clearTimeout(closetimer);
  closetimer = null;
 }
}
document.onclick = mclose;
</script>
</head>
<body style="text-align:center">
<div id="mainHeader" >
<div id="headerTop"></div>
<div id="headerBottom">
<ul id="navmenu">
 <li><a href="#" onmouseover="mopen('m1')" onmouseout="mclosetime()">网站首页<span class="downArrow"></span></a>
  <div id="m1" onmouseover="mcancelclosetime()" onmouseout="mclosetime()">
  <a href="#">小牛知识库</a>
  <a href="#">电子商务</a>
  <a href="#">网络营销人才</a>
  <a href="#">导航条代码</a>
  <a href="#">网站营销</a>  </div>
 </li>
 <li><a href="#" onmouseover="mopen('m2')" onmouseout="mclosetime()">导航条代码<span class="downArrow"></span></a>
  <div id="m2" onmouseover="mcancelclosetime()" onmouseout="mclosetime()">
  <a href="#">小牛知识库</a>
  <a href="#">电子商务</a>
  <a href="#">网络营销人才</a>
  <a href="#">导航条代码</a>
  <a href="#">网站营销</a>  </div>
 </li>
 <li><a href="#" onmouseover="mopen('m3')" onmouseout="mclosetime()">网页素材<span class="downArrow"></span></a>
  <div id="m3" onmouseover="mcancelclosetime()" onmouseout="mclosetime()">
  <a href="#">小牛知识库</a>
  <a href="#">电子商务</a>
  <a href="#">网络营销人才</a>
  <a href="#">导航条代码</a>
  <a href="#">网站营销</a>  </div>
 </li>
 <li class="newSash"><a href="#">小牛知识库</a><span class="newSashSpan"></span>
 </li>
 <li><a href="#" onmouseover="mopen('m4')" onmouseout="mclosetime()">开源源码<span class="downArrow"></span></a>
  <div id="m4" onmouseover="mcancelclosetime()" onmouseout="mclosetime()">
  <a href="#">小牛知识库</a>
  <a href="#">电子商务</a>
  <a href="#">网络营销人才</a>
  <a href="#">导航条代码</a>
  <a href="#">网站营销</a> </div>
 </li>
 <li><a href="#">网站营销</a>
 </li>
 <li><a href="#">网站建设</a>
 </li>
</ul>
</div>
</div>
</div>
<br><br><br><br>
<p><p>非常小巧的JS下拉菜单代码，兼容：IE6+, Firefox 1.5+, Opera 8+, Safari 3+, Chrome 0.2+</p></p>
</body>
</html>

希望本文所述对大家的javascript程序设计有所帮助。

js实现适用于素材网站的黑色多级菜单导航条效果

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