Contoh menu lungsur mudah JavaScript kemahiran code

Contoh menu lungsur mudah JavaScript kemahiran code_javascript

WBOY

Lepaskan： 2016-05-16 15:40:09

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1399 orang telah melayarinya

Contoh dalam artikel ini menerangkan kod contoh menu lungsur mudah JavaScript. Kongsikan dengan semua orang untuk rujukan anda. Butirannya adalah seperti berikut:

Ini ialah kod demo menu lungsur yang dilaksanakan JavaScript, menu jQuery CSS dengan kesan kecerunan, menu slaid ke bawah dan menyokong sehingga dua tahap Ia adalah gaya menu yang biasa dilihat di Internet awak suka.

Tangkapan skrin kesan berjalan adalah seperti berikut:

Alamat demo dalam talian adalah seperti berikut:

http://demo.jb51.net/js/2015/js-simple-xlcd-down-menu-codes/

Kod khusus adalah seperti berikut:

<!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=UTF-8">
<title>JavaScript下拉菜单演示代码</title>
<style type="text/css">
body {margin:25px; font:12px Verdana, Arial, Helvetica}
* {padding:0; margin:0}
.dropdown {float:left; padding-right:0px}
.dropdown dt {width:80px; border:2px solid #9ac1c9; padding:8px; font-weight:bold; cursor:pointer; background:url()}
.dropdown dt:hover {background:url()}
.dropdown dd {position:absolute; overflow:hidden; width:100px; display:none; background:#fff; z-index:200; opacity:0}
.dropdown ul {width:100px; border:2px solid #9ac1c9; list-style:none; border-top:none}
.dropdown li {display:inline}
.dropdown a, .dropdown a:active, .dropdown a:visited {display:block; padding:5px; color:#333; text-decoration:none; background:#eaf0f2; width:194px}
.dropdown a:hover {background:#d9e1e4; color:#000}
.dropdown .underline {border-bottom:1px solid #b9d6dc}
</style>
<script language="javascript">
var DDSPEED = 10;
var DDTIMER = 15;
function ddMenu(id,d){
 var h = document.getElementById(id + '-ddheader');
 var c = document.getElementById(id + '-ddcontent');
 clearInterval(c.timer);
 if(d == 1){
  clearTimeout(h.timer);
  if(c.maxh && c.maxh <= c.offsetHeight){return}
  else if(!c.maxh){
   c.style.display = 'block';
   c.style.height = 'auto';
   c.maxh = c.offsetHeight;
   c.style.height = '0px';
  }
  c.timer = setInterval(function(){ddSlide(c,1)},DDTIMER);
 }else{
  h.timer = setTimeout(function(){ddCollapse(c)},50);
 }
}
// collapse the menu //
function ddCollapse(c){
 c.timer = setInterval(function(){ddSlide(c,-1)},DDTIMER);
}
function cancelHide(id){
 var h = document.getElementById(id + '-ddheader');
 var c = document.getElementById(id + '-ddcontent');
 clearTimeout(h.timer);
 clearInterval(c.timer);
 if(c.offsetHeight < c.maxh){
  c.timer = setInterval(function(){ddSlide(c,1)},DDTIMER);
 }
}
function ddSlide(c,d){
 var currh = c.offsetHeight;
 var dist;
 if(d == 1){
  dist = (Math.round((c.maxh - currh) / DDSPEED));
 }else{
  dist = (Math.round(currh / DDSPEED));
 }
 if(dist <= 1 && d == 1){
  dist = 1;
 }
 c.style.height = currh + (dist * d) + 'px';
 c.style.opacity = currh / c.maxh;
 c.style.filter = 'alpha(opacity=' + (currh * 100 / c.maxh) + ')';
   if((currh < 2 && d != 1) || (currh > (c.maxh - 2) && d == 1)){
   clearInterval(c.timer);
   }
   }
   </script>
   </head>
   <body>
   <br><br>
   <dl class="dropdown">
   <dt id="one-ddheader" onmouseover="ddMenu('one',1)" onmouseout="ddMenu('one',-1)">One</dt>
   <dd id="one-ddcontent" onmouseover="cancelHide('one')" onmouseout="ddMenu('one',-1)">
   <ul>
   <li><a href="#" class="underline">脚本之家</a></li>
   <li><a href="#" class="underline">Navigation Item 2</a></li>
   <li><a href="#" class="underline">Navigation Item 3</a></li>
   <li><a href="#" class="underline">Navigation Item 4</a></li>
   <li><a href="#">Navigation Item 5</a></li>
 </ul>
 </dd>
 </dl>
 <dl class="dropdown">
 <dt id="two-ddheader" onmouseover="ddMenu('two',1)" onmouseout="ddMenu('two',-1)">Two</dt>
 <dd id="two-ddcontent" onmouseover="cancelHide('two')" onmouseout="ddMenu('two',-1)">
 <ul>
 <li><a href="#" class="underline">Navigation Item 1</a></li>
 <li><a href="#" class="underline">Navigation Item 2</a></li>
 <li><a href="#" class="underline">Navigation Item 3</a></li>
 <li><a href="#" class="underline">默认主页</a></li>
 <li><a href="#">Navigation Item 5</a></li>
 </ul>
 </dd>
 </dl>
 <dl class="dropdown">
 <dt id="three-ddheader" onmouseover="ddMenu('three',1)" onmouseout="ddMenu('three',-1)">Two</dt>
 <dd id="three-ddcontent" onmouseover="cancelHide('three')" onmouseout="ddMenu('three',-1)">
 <ul>
 <li><a href="#" class="underline">Navigation Item 1</a></li>
 <li><a href="#" class="underline">Navigation Item 2</a></li>
 <li><a href="#" class="underline">Navigation Item 3</a></li>
 <li><a href="#" class="underline">Navigation Item 4</a></li>
 <li><a href="#">Navigation Item 5</a></li>
 </ul>
 </dd>
 </dl>
 <dl class="dropdown">
 <dt id="four-ddheader" onmouseover="ddMenu('four',1)" onmouseout="ddMenu('four',-1)">Two</dt>
 <dd id="four-ddcontent" onmouseover="cancelHide('four')" onmouseout="ddMenu('four',-1)">
 <ul>
 <li><a href="#" class="underline">默认主页</a></li>
 <li><a href="#" class="underline">Navigation Item 2</a></li>
 <li><a href="#" class="underline">Navigation Item 3</a></li>
 <li><a href="#" class="underline">Navigation Item 4</a></li>
 <li><a href="#">Navigation Item 5</a></li>
 </ul>
 </dd>
 </dl>
 <dl class="dropdown">
 <dt id="fir-ddheader" onmouseover="ddMenu('fir',1)" onmouseout="ddMenu('fir',-1)">Two</dt>
 <dd id="fir-ddcontent" onmouseover="cancelHide('fir')" onmouseout="ddMenu('fir',-1)">
 <ul>
 <li><a href="#" class="underline">Navigation Item 1</a></li>
 <li><a href="#" class="underline">默认主页</a></li>
 <li><a href="#" class="underline">Navigation Item 3</a></li>
 <li><a href="#" class="underline">Navigation Item 4</a></li>
 <li><a href="#">Navigation Item 5</a></li>
 </ul>
 </dd>
 </dl>
 <dl class="dropdown">
 <dt id="six-ddheader" onmouseover="ddMenu('six',1)" onmouseout="ddMenu('six',-1)">Two</dt>
 <dd id="six-ddcontent" onmouseover="cancelHide('six')" onmouseout="ddMenu('six',-1)">
 <ul>
 <li><a href="#" class="underline">Navigation Item 1</a></li>
 <li><a href="#" class="underline">Navigation Item 2</a></li>
 <li><a href="#" class="underline">Navigation Item 3</a></li>
 <li><a href="#" class="underline">Navigation Item 4</a></li>
 <li><a href="#">Navigation Item 5</a></li>
 </ul>
 </dd>
 </dl>
 <dl class="dropdown">
 <dt id="seven-ddheader" onmouseover="ddMenu('seven',1)" onmouseout="ddMenu('seven',-1)">Two</dt>
 <dd id="seven-ddcontent" onmouseover="cancelHide('seven')" onmouseout="ddMenu('seven',-1)">
 <ul>
 <li><a href="#" class="underline">Navigat</a></li>
 <li><a href="#" class="underline">Naviga</a></li>
 <li><a href="#" class="underline">Navigati</a></li>
 <li><a href="#" class="underline">Navigat</a></li>
 <li><a href="#">Navigatio</a></li>
 </ul>
 </dd>
 </dl>
 <div style="clear:both">
 </div>
</body>
</html>

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