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Multi-level drop-down menu effect code implemented by jQuery_jquery

WBOY
WBOYOriginal
2016-05-16 15:43:131324browse

The example in this article describes the multi-level drop-down menu effect code implemented by jQuery. Share it with everyone for your reference. The details are as follows:

This is a jQuery multi-level drop-down menu. If you test it in a browser that supports HTML5, you will find that this menu is very smart. It will automatically determine the browser boundary to change the display direction of the drop-down menu. This effect is not found in IE. . On the whole, the menu style is very similar to the "Classic" theme of the Windows system. Combined with the pictures, the overall effect is quite professional.

The screenshot of the running effect is as follows:

The online demo address is as follows:

http://demo.jb51.net/js/2015/jquery-nlevel-nav-menu-style-codes/

The specific code is as follows: 

<!DOCTYPE html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery多级下拉菜单</title>
</head>
<body>
<script src="jquery-1.6.2.min.js"></script>
<script>
$(document).ready(function(){
$('#menu li').hover(function(){
  $(this).find('ul:first').css({visibility: "visible",display: "none"}).fadeIn(400); // effect 1
 },function(){
  $(this).find('ul:first').css({visibility: "hidden"});
 });
});
</script>
<style>
body{background:#eee;font-family:Verdana, Helvetica, Arial, sans-serif;margin:0;padding:0}
.examples{background:#FFF;width:800px;font-size:80%;border:1px #000 solid;margin:3.5em auto 2em;padding:1em 2em 2em}
#menu {width:750px; height:531px; background:url(images/snowboard.jpg); text-align:center; margin:0 auto;}
#menu ul {margin:0; padding:0; list-style:none; white-space:nowrap; text-align:left; background:#ccccd0; border:1px solid #333; border-color:#eee #555 #222 #fff;}
#menu ul {display:inline-block;}
#menu li {margin:0; padding:0; list-style:none;}
#menu li {display:inline-block; display:inline;}
#menu ul ul {position:absolute; left:-9999px;}
#menu ul.level1 {margin:0 auto;}
#menu ul.level1 li.level1-li {float:left; display:block; position:relative;}
#menu b {position:absolute;}
#menu a {display:block; font:normal 11px verdana,arial,sans-serif; color:#000; line-height:25px; text-decoration:none;padding:0 20px;}
#menu ul.level1 li.level1-li a.level1-a {float:left;}
#menu ul li:hover > ul {visibility:visible; left:0; top:21px;}
#menu ul ul li:hover > ul {visibility:visible; left:100%; top:auto; margin-top:-25px; margin-left:-4px;}
#menu li.left:hover > ul {visibility:visible; left:auto; right:0; top:25px;}
#menu li.left ul li:hover > ul {visibility:visible; left:auto; right:100%; top:auto; margin-top:-25px; margin-right:-4px;}
#menu a:hover ul {left:0; top:23px;}
#menu li.left a:hover ul {left:auto; right:-1px; top:23px;}
#menu li.left ul a {text-align:right;}
#menu a:hover a:hover ul,
#menu a:hover a:hover a:hover ul {left:100%; visibility:visible;}
#menu li.left a:hover a:hover ul,
#menu li.left a:hover a:hover a:hover ul {left:auto; right:0; visibility:visible;}
#menu a:hover ul ul,
#menu a:hover a:hover ul ul {left:-9999px;}
#menu li.left a:hover ul ul,
#menu li.left a:hover a:hover ul ul {left:-9999px;}
#menu li a.drop {background:transparent url(images/white-down.gif) no-repeat right center;}
#menu li a.fly {background:transparent url(images/white-right.gif) no-repeat right center;}
#menu li.left ul a.fly {background:transparent url(images/white-left.gif) no-repeat left center;}
#menu li a:hover,
#menu li a.fly:hover {color:#c60; background-color:#c0c0c8;}
#menu li:hover > a,
#menu ul li:hover > a.fly {color:#c60; background-color:#c0c0c8;}
#menu table {position:absolute; height:0; width:0; left:0; border-collapse:collapse; margin-top:-6px;}
#menu table table {position:absolute; left:99%; height:0; width:0; border-collapse:collapse; margin-top:-30px; margin-left:-4px;}
#menu li.left table {position:absolute; height:0; width:0; left:auto; right:0; border-collapse:collapse; margin-top:-4px;}
#menu li.left table table {position:absolute; left:auto; right:100%; height:0; width:0; border-collapse:collapse; margin-top:-30px; margin-right:-4px;}
</style>
<div class="examples">
 <div id="menu">
  <ul class="level1">
   <li class="level1-li"><a class="level1-a" href="#url">Home</a></li>
   <li class="level1-li"><a class="level1-a drop" href="#url">Contact Us<!--[if gte IE 7]><!--></a><!--<![endif]-->
   <!--[if lte IE 6]><table><tr><td><![endif]-->
    <ul class="level2">
     <li><a href="#url">Email</a></li>
     <li><a href="#url">Telephone</a></li>
     <li><a href="#url">Online Form</a></li>
     <li><a href="#url">Snail Mail Address</a><b></b></li>
    </ul>
   <!--[if lte IE 6]></td></tr></table></a><![endif]-->
   </li>
   <li class="level1-li"><a class="level1-a drop" href="#url">Resort<!--[if gte IE 7]><!--></a><!--<![endif]-->
   <!--[if lte IE 6]><table><tr><td><![endif]-->
    <ul class="level2">
     <li><a href="#url">Ski Hire Facilities</a></li>
     <li><a class="fly" href="#url">Main Ski Slopes<!--[if gte IE 7]><!--></a><!--<![endif]-->
     <!--[if lte IE 6]><table><tr><td><![endif]-->
      <ul class="level3">
       <li><a href="#url">Beginners Slopes</a></li>
       <li><a href="#url">Intermediate Slopes</a></li>
       <li><a class="fly" href="#url">Advanced Skill Levels<!--[if gte IE 7]><!--></a><!--<![endif]-->
       <!--[if lte IE 6]><table><tr><td><![endif]-->
        <ul class="level4">
         <li><a href="#url">Local</a></li>
         <li><a href="#url">Nearby</a></li>
         <li><a href="#url">With instructor</a></li>
         <li><a href="#url">Snow boarding</a><b></b></li>
        </ul>
       <!--[if lte IE 6]></td></tr></table></a><![endif]-->
       </li>
       <li><a href="#url">Expert</a></li>
      </ul>
     <!--[if lte IE 6]></td></tr></table></a><![endif]-->
     </li>
     <li><a href="#url">Night Life</a></li>
     <li><a class="fly" href="#url">Restaurants<!--[if gte IE 7]><!--></a><!--<![endif]-->
     <!--[if lte IE 6]><table><tr><td><![endif]-->
      <ul class="level3">
       <li><a href="#url">Snow Hotel</a></li>
       <li><a href="#url">The Snowman</a></li>
       <li><a href="#url">Ice Cavern</a></li>
       <li><a href="#url">Ski Inn</a><b></b></li>
      </ul>
     <!--[if lte IE 6]></td></tr></table></a><![endif]-->
     </li>
     <li><a class="fly" href="#url">Car Hire<!--[if gte IE 7]><!--></a><!--<![endif]-->
     <!--[if lte IE 6]><table><tr><td><![endif]-->
      <ul class="level3">
       <li><a href="#url">From Airport</a></li>
       <li><a href="#url">In Resort</a></li>
       <li><a href="#url">Multiple Resorts</a><b></b></li>
      </ul>
     <!--[if lte IE 6]></td></tr></table></a><![endif]-->
     </li>
    </ul>
   <!--[if lte IE 6]></td></tr></table></a><![endif]-->
   </li>
   <li class="level1-li"><a class="level1-a drop" href="#url">Surrounding Area<!--[if gte IE 7]><!--></a><!--<![endif]-->
   <!--[if lte IE 6]><table><tr><td><![endif]-->
    <ul class="level2">
     <li><a href="#url">Where to go</a></li>
     <li><a href="#url">What to do</a></li>
     <li><a href="#url">Places of interest</a></li>
     <li><a href="#url">National parks & Museums</a><b></b></li>
    </ul>
   <!--[if lte IE 6]></td></tr></table></a><![endif]-->
   </li>
   <li class="level1-li left"><a class="level1-a drop" href="#url">Information<!--[if gte IE 7]><!--></a><!--<![endif]-->
   <!--[if lte IE 6]><table><tr><td><![endif]-->
    <ul class="level2">
     <li><a href="#url">Money Exchange</a></li>
     <li><a class="fly" href="#url">Resort Essential Information<!--[if gte IE 7]><!--></a><!--<![endif]-->
     <!--[if lte IE 6]><table><tr><td><![endif]-->
      <ul class="level3">
       <li><a href="#url">Lift Passes</a></li>
       <li><a href="#url">Insurance</a></li>
       <li><a class="fly" href="#url">Gear Rental<!--[if gte IE 7]><!--></a><!--<![endif]-->
       <!--[if lte IE 6]><table><tr><td><![endif]-->
        <ul class="level4">
         <li><a href="#url">Boots</a></li>
         <li><a href="#url">Skis</a></li>
         <li><a href="#url">Ski Wear</a></li>
         <li><a href="#url">Goggles</a><b></b></li>
        </ul>
       <!--[if lte IE 6]></td></tr></table></a><![endif]-->
       </li>
       <li><a href="#url">Ski Schools</a></li>
       <li><a href="#url">Snow Report</a></li>
      </ul>
     <!--[if lte IE 6]></td></tr></table></a><![endif]-->
     </li>
     <li><a class="fly" href="#url">Language<!--[if gte IE 7]><!--></a><!--<![endif]-->
     <!--[if lte IE 6]><table><tr><td><![endif]-->
      <ul class="level3">
       <li><a href="#url">Austrian</a></li>
       <li><a href="#url">German</a></li>
       <li><a href="#url">French</a></li>
       <li><a href="#url">English</a><b></b></li>
      </ul>
     <!--[if lte IE 6]></td></tr></table></a><![endif]-->
     </li>
     <li><a href="#url">Short Breaks</a></li>
    </ul>
   <!--[if lte IE 6]></td></tr></table></a><![endif]-->
   </li>
   <li class="level1-li"><a class="level1-a" href="#url">Privacy</a></li>
  </ul>
 </div>
 <div style="clear:both"></div>
</div>
<hr style="clear:both;" />
</body>
</html>

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

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