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js implements black multi-level menu navigation bar effect suitable for material websites_javascript skills

WBOY
WBOYOriginal
2016-05-16 15:43:301471browse

The example in this article describes the js implementation of a black multi-level menu navigation bar effect suitable for material websites. Share it with everyone for your reference. The details are as follows:

This is a black multi-level menu navigation bar suitable for material websites. It does not require jQuery and is implemented using CSS javaScript. The overall effect is very good and it is also very good for learning CSS.

The screenshot of the running effect is as follows:

The online demo address is as follows:

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

The specific code is as follows: 

<!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="#">脚本之家</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="#">脚本之家</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="#">脚本之家</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="#">脚本之家</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="#">脚本之家</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>

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

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