本文实例讲述了JS实现黑色大气的二级导航菜单效果。分享给大家供大家参考。具体如下：
这是一款自己做的不错的二级导航菜单，黑色风格，是根据仿淘宝支付宝菜单而做的，自我感觉还算行吧。
运行效果截图如下：
在线演示地址如下：
http://demo.jb51.net/js/2015/js-black-style-2l-nav-menu-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> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>多级导航菜单</title> <style> strong { font-style: normal; font-weight: normal; font-weight: bold; } a { cursor: pointer; text-decoration: none; } #container { width: 960px; margin: 0pt auto; } #nav, .nav-container, .nav-container ul, #nav .nav-master-a:hover, #nav .nav-master-a:hover strong, #nav li.current .nav-master-a strong, #nav li.current .nav-master-a, #nav .nav-sub a:hover, #nav .nav-sub a:hover span { background-image: url('images/bg-nav.gif'); background-repeat: no-repeat; } #nav { position: relative; height: 66px; margin: 5px 0pt 0pt; background-position: 0pt -230px; background-repeat: repeat-x; } .nav-container { padding-left: 15px; height: 66px; background-position: 0pt 0pt; } .nav-container ul { height: 100%; background-position: right -66px; } .nav-container ul ul.nav-sub { background: none repeat scroll 0% 0% transparent; height: auto; } .nav-master { display: block; float: left; height: 36px; width: 100px; line-height: 36px; text-align: center; padding-right: 4px; } .nav-master-a { display: block; font-size: 14px; height: 26px; line-height: 26px; overflow: hidden; background: none repeat scroll 0% 0% transparent; text-decoration: none; margin-top: 5px; } .nav-master-a strong { display: block; color: rgb(255, 255, 255); height: 100%; } li.current .nav-master-a strong, #nav li.current .nav-master-a:hover strong { color: rgb(0, 0, 0); } .nav-master-a:hover { text-decoration: none; background-position: 0pt -315px; } .nav-master-a:hover strong { background-position: right -360px; } #nav li.current .nav-master-a strong { background-position: right -180px; padding-top: 2px; } #nav li.current .nav-master-a { background-position: 0pt -131px; overflow: hidden; color: rgb(0, 0, 0); height: 31px; } #nav li.current .nav-master-a:hover strong { color: rgb(0, 0, 0); } ul.nav-sub { position: absolute; width: 920px; text-align: left; top: 38px; left: 20px; display: none; padding: 2px 0pt 0pt; background: none repeat scroll 0% 0% transparent; } #nav .current .nav-sub { display: block; } .nav-sub li { float: left; display: block; width: 78px; text-align: center; height: 30px; overflow: hidden; margin-right: 4px; } #nav .nav-sub a { display: block; height: 22px; overflow: hidden; color: rgb(77, 77, 77); text-decoration: none; } #nav .nav-sub a span { display: block; line-height: 22px; height: 22px; } #nav .nav-sub a:hover { background-position: 0pt -405px; } #nav .nav-sub a:hover span { background-position: right -446px; } .sp-nav { overflow:hidden; background: url(images/bg-nav.gif) repeat-x 0 -595px; height:31px; line-height:31px } .sp-con { color:#CCC; margin:0 auto; width:968px; } .sp-l { overflow:hidden; float:left; background:url(images/bg-nav.gif) no-repeat 0 -558px; width:6px; height:31px } .sp-r { overflow:hidden; float:right; background:url(images/bg-nav.gif) no-repeat -6px -558px; height:31px; width:6px; } .sp-m { position:relative; padding:0 10px; float:left; background:url(images/bg-nav.gif) repeat-x 0 -495px; height:31px; line-height:31px; width:936px; color:#000; text-align: left; } .other { float: left; height: 23px; margin-right: 22px; display: inline; } .so { float: right; padding-top: 6px; height: 26px; } .so .inputstyleso { width: 89px; height: 16px; line-height: 16px; border: 1px solid rgb(190, 190, 190); float: left; padding-top: 2px; padding-left: 5px; } .so img { float: left; margin: 2px 4px 0pt 0pt; display: inline; } </style> </head> <body> <script language="javascript"> var waitInterval2; var MDelayTime2=300;/* 设置延时0.3秒 */ function qiehuan(num){ clearTimeout(waitInterval2); waitInterval2=window.setTimeout("qiehuan2("+num+");",MDelayTime2); } function qiehuan2(num){ clearTimeout(waitInterval2); for(var id = 0;id<=9;id++) { if(id==num) { document.getElementById("qh_con"+id).style.display="block"; document.getElementById("mynav"+id).className="nav-master current"; } else { document.getElementById("qh_con"+id).style.display="none"; document.getElementById("mynav"+id).className="nav-master"; } } } </script> <div id="nav"> <div> <ul> <li id="mynav0"><a href="#" onMouseOut="clearTimeout(waitInterval2);" onMouseOver="javascript:qiehuan(0)"><strong>首页</strong></a> <ul id="qh_con0"> <li><a href="#"><span>最近更新</span></a></li> <li><a href="#"><span>热门推荐</span></a></li> <li><a href="#"><span>周下载榜</span></a></li> <li><a href="#"><span>月下载榜</span></a></li> <li><a href="#"><span>相关教程</span></a></li> <li><a href="#"><span>美化软件</span></a></li> </ul> </li> <li id="mynav1"> <a href="#" onMouseOut="clearTimeout(waitInterval2);" onMouseOver="javascript:qiehuan(1)"><strong>xp主题</strong></a> <ul id="qh_con1"> <li><a href="#"><span>美女明星</span></a></li> <li><a href="#"><span>影视动漫</span></a></li> <li><a href="#"><span>清爽系列</span></a></li> <li><a href="#"><span>颜色专题</span></a></li> <li><a href="#"><span>3D金属</span></a></li> <li><a href="#"><span>节日游戏</span></a></li> <li><a href="#"><span>汽车体育</span></a></li> <li><a href="#"><span>风景设计</span></a></li> <li><a href="#"><span>苹果系统</span></a></li> <li><a href="#"><span>透明专题</span></a></li> </ul> </li> <li id="mynav2"> <a href="#" onMouseOut="clearTimeout(waitInterval2);" onMouseOver="javascript:qiehuan(2)"><strong>vista主题</strong></a> <ul id="qh_con2"> <li><a href="#"><span>完美套装</span></a></li> <li><a href="#"><span>动漫影视</span></a></li> <li><a href="#"><span>清爽系列</span></a></li> <li><a href="#"><span>美女主题</span></a></li> <li><a href="#"><span>3D系列</span></a></li> <li><a href="#"><span>汽车主题</span></a></li> <li><a href="#"><span>风景主题</span></a></li> <li><a href="#"><span>黑色主题</span></a></li> <li><a href="#"><span>创意设计</span></a></li> <li><a href="#"><span>系统主题</span></a></li> </ul> </li> <li id="mynav3"> <a href="#" onMouseOut="clearTimeout(waitInterval2);" onMouseOver="javascript:qiehuan(3)"><strong>win7主题</strong></a> <ul id="qh_con3"> <li><a href="#"><span>完美套装</span></a></li> <li><a href="#"><span>风景主题</span></a></li> <li><a href="#"><span>动漫影视</span></a></li> <li><a href="#"><span>汽车主题</span></a></li> <li><a href="#"><span>清爽系列</span></a></li> <li><a href="#"><span>设计主题</span></a></li> <li><a href="#"><span>黑色主题</span></a></li> <li><a href="#"><span>精美推荐</span></a></li> </ul> </li> <li id="mynav4"> <a href="#" onMouseOut="clearTimeout(waitInterval2);" onMouseOver="javascript:qiehuan(4)"><strong>屏幕保护</strong></a> <ul id="qh_con4"> <li><a href="#"><span>泡泡</span></a></li> <li><a href="#"><span>湖泊瀑布</span></a></li> <li><a href="#"><span>动物植物</span></a></li> <li><a href="#"><span>3D、游戏</span></a></li> <li><a href="#"><span>影视卡通</span></a></li> <li><a href="#"><span>时钟</span></a></li> <li><a href="#"><span>恐怖</span></a></li> <li><a href="#"><span>节日、艺术</span></a></li> <li><a href="#"><span>水馆族</span></a></li> <li><a href="#"><span>自然风光</span></a></li> <li><a href="#"><span>太空、火焰</span></a></li> </ul> </li> <li id="mynav5"> <a href="#" onMouseOut="clearTimeout(waitInterval2);" onMouseOver="javascript:qiehuan(5)"><strong>系统图标</strong></a> <ul id="qh_con5"> <li><a href="#"><span>IP包</span></a></li> <li><a href="#"><span>苹果</span></a></li> <li><a href="#"><span>系统硬件</span></a></li> <li><a href="#"><span>生活</span></a></li> <li><a href="#"><span>游戏</span></a></li> <li><a href="#"><span>节日</span></a></li> <li><a href="#"><span>卡通</span></a></li> <li><a href="#"><span>文件夹</span></a></li> <li><a href="#"><span>回收站</span></a></li> <li><a href="#"><span>软件</span></a></li> <li><a href="#"><span>手机数码</span></a></li> </ul> </li> <li id="mynav6"> <a href="#" onMouseOut="clearTimeout(waitInterval2);" onMouseOver="javascript:qiehuan(6)"><strong>鼠标指针</strong></a> <ul id="qh_con6"> <li><a href="#"><span>动漫鼠标</span></a></li> <li><a href="#"><span>透明系列</span></a></li> <li><a href="#"><span>精美特色</span></a></li> <li><a href="#"><span>CursorFx/Xp</span></a></li> <li><a href="#"><span>鼠标特效</span></a></li> </ul> </li> <li id="mynav7"> <a href="#" onMouseOut="clearTimeout(waitInterval2);" onMouseOver="javascript:qiehuan(7)"><strong>桌面壁纸</strong></a> <ul id="qh_con7"> <li><a href="#"><span>3D、创意</span></a></li> <li><a href="#"><span>美女明星</span></a></li> <li><a href="#"><span>动物植物</span></a></li> <li><a href="#"><span>风景、日历</span></a></li> <li><a href="#"><span>节日系列</span></a></li> <li><a href="#"><span>影视动漫</span></a></li> <li><a href="#"><span>游戏卡通</span></a></li> <li><a href="#"><span>PSP、手绘</span></a></li> <li><a href="#"><span>炫彩抽象</span></a></li> <li><a href="#"><span>人文建筑</span></a></li> </ul> </li> <li id="mynav8"> <a href="#" onMouseOut="clearTimeout(waitInterval2);" onMouseOver="javascript:qiehuan(8)"><strong>其它美化</strong></a> <ul id="qh_con8"> <li><a href="#"><span>启动界面</span></a></li> <li><a href="#"><span>登陆界面</span></a></li> <li><a href="#"><span>vista边栏</span></a></li> <li><a href="#"><span>梦幻桌面</span></a></li> <li><a href="#"><span>系统声音</span></a></li> <li><a href="#"><span>精选美化包</span></a></li> <li><a href="#"><span>相关教程</span></a></li> <li><a href="#"><span>美化软件</span></a></li> </ul> </li> </ul> </div> </div> </body> </html>
希望本文所述对大家的JavaScript程序设计有所帮助。
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