本文實例講述了jQuery實現的簡潔下拉菜單導航效果。分享給大家供大家參考。具體如下：
這里使用jQuery實現簡潔下拉菜單導航效果，代碼規范，兼容性方面:支持 IE6+, Firefox 1.5+, Opera 8+, Safari 3+, Chrome 0.2+。簡潔明快的jquery網站菜單，請參閱代碼。
運行效果截圖如下：
在線演示地址如下：
http://demo.VeVB.COm/js/2015/jquery-simple-down-show-menu-nav-codes/
具體代碼如下：
<!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>jQuery下拉菜單導航</title><style>body{background: #6595A3;padding: 0 20px}.clear{clear: both;overflow: hidden;height: 0}#all{width: 80%;min-width: 650px;margin: 40px auto 0 auto;background: #FCFFED;padding: 20px 35px}h1{font: 26px tahoma, arial;color: #324143}p{font: 12px tahoma, arial;color: #171F26;margin-bottom: 25px}a{color: #324143}#copyright{width: 80%;min-width: 650px;margin: 0 auto;padding: 20px 35px;background: #B6C28B;font: 12px tahoma, arial;color: #324143}#copyright a{color: #324143}#copyright a: hover{color: #171F26}#jsddm{margin: 0;padding: 0}#jsddm li{float: left;list-style: none;font: 12px Tahoma, Arial}#jsddm li a{display: block;background: #324143;padding: 5px 12px;text-decoration: none;border-right: 1px solid white;width: 70px;color: #EAFFED;white-space: nowrap}#jsddm li a: hover{background: #24313C}#jsddm li ul{margin: 0;padding: 0;position: absolute;visibility: hidden;border-top: 1px solid white}#jsddm li ul li{float: none;display: inline}#jsddm li ul li a{width: auto;background: #A9C251;color: #24313C}#jsddm li ul li a: hover{background: #8EA344}</style></head><body><div id="all"><h1>jQuery簡潔下拉菜單導航</h1><p>簡潔明快的jquery網站菜單，請參閱代碼.</p><script src="jquery-1.6.2.min.js" type="text/javascript"></script><script type="text/javascript">var timeout= 500;var closetimer= 0;var ddmenuitem= 0;function jsddm_open(){ jsddm_canceltimer(); jsddm_close(); ddmenuitem = $(this).find('ul').eq(0).css('visibility', 'visible');}function jsddm_close(){ if(ddmenuitem) ddmenuitem.css('visibility', 'hidden');}function jsddm_timer(){ closetimer = window.setTimeout(jsddm_close, timeout);}function jsddm_canceltimer(){ if(closetimer) { window.clearTimeout(closetimer); closetimer = null;}}$(document).ready(function(){ $('#jsddm > li').bind('mouseover', jsddm_open); $('#jsddm > li').bind('mouseout', jsddm_timer);});document.onclick = jsddm_close; </script></p><ul id="jsddm"> <li><a href="#">JavaScript</a> <ul> <li><a href="#">下拉菜單</a></li> <li><a href="#">jQuery插件</a></li> <li><a href="#">Ajax Navigation</a></li> </ul> </li> <li><a href="#">Effect</a> <ul> <li><a href="#">幻燈切換</a></li> <li><a href="#">Fade Effect</a></li> <li><a href="#">Opacity Mode</a></li> <li><a href="#">下滑陰影</a></li> <li><a href="#">Semitransparent</a></li> </ul> </li> <li><a href="#">Navigation</a> <ul> <li><a href="#">Slide Effect</a></li> <li><a href="#">Fade Effect</a></li> <li><a href="#">Drop Shadow</a></li> </ul> </li> <li><a href="#">HTML/CSS</a> <ul> <li><a href="#">圖片特效</a></li> <li><a href="#">Opacity Mode</a></li> <li><a href="#">靜態網頁</a></li> </ul> </li> <li><a href="#" target="_blank">Help</a></li></ul><div class="clear"> </div><br><p><b>兼容:</b> IE6+, Firefox 1.5+, Opera 8+, Safari 3+, Chrome 0.2+<br></div></div></body></html>希望本文所述對大家的jquery程序設計有所幫助。
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