javascript实现的鼠标悬停时动态翻滚的导航条

<!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>动态翻滚的导航条</title> <style type="text/css"> .clear:after{content:"."; display:block; height:0; clear:both; visibility:hidden}.clear{display:inline-block}.clear{display:block} div#nav{height:32px; background:url(//img.jbzj.com/demoimg/200911/YL29.jpg) repeat-x} div#nav ul{ width:705px; list-style:none; margin-top: 0; margin-right: auto; margin-bottom: 0; margin-left: 0px; } div#nav ul li{ float:left; height:32px; overflow:hidden; background-image: url(//img.jbzj.com/demoimg/200911/YL30.jpg); background-repeat: repeat-y; background-position: right 0; padding-top: 0; padding-right: 1px; padding-bottom: 0; padding-left: 0px; font-family: Arial; font-size: 12px; line-height: 32px; font-weight: bold; } div#nav ul li a{ float:left; height:100%; width: 77px; background:url(//img.jbzj.com/demoimg/200911/YL28.jpg) repeat-x; color:#fff; text-decoration:none; padding-top: 0; padding-right: 5px; padding-bottom: 0; padding-left: 5px; text-align:center; } div#nav ul li a.hover{ clear:both; background-position:0 -32px; width: 77px; } div#nav ul li.on a{ background-position:0 -32px; } div#nav ul li.nobg{background:none} /* ]]> */ </style> </head> <body> <div id="nav"> <ul class="clear"> <li><a href="https://www.jb51.net">脚本之家</a></li> <li><a href="#">网页特效</a></li> <li><a href="#">工具软件</a></li> <li><a href="#">源码下载</a></li> <li><a href="#">菜单导航</a></li> <li><a href="#">层和布局</a></li> <li><a href="#">论坛社区</a></li> <li><a href="#">广告联系</a></li> <li class="nobg"></li> </ul> </div> <script type="text/javascript"> /* <![CDATA[ */ function nav(c, config){ this.config = config || {speed: 10, num: 2}; this.container = (typeof(c)=="object") ? c : document.getElementById(c); this.lineHeight = this.container.offsetHeight; this.scrollTimeId = null; var _this = this; this.__construct = function (){ var inner,el,href; inner = _this.container.childNodes[0].innerHTML; href = _this.container.childNodes[0].href; el = document.createElement("a"); el.innerHTML = inner; el.href = href; el.className = 'hover'; _this.container.appendChild(el); _this.container.onmouseover = function (){_this.start()}; _this.container.onmouseout = function (){_this.end()}; }(); this.start = function (){ _this.clear(); _this.scrollTimeId = setTimeout(function(){_this.scrollUp();}, _this.config.speed); }; this.end = function (){ _this.clear(); _this.scrollTimeId = setTimeout(function(){_this.scrollDown();}, _this.config.speed); }; this.scrollUp = function (){ var c = _this.container; if(c.scrollTop >= _this.lineHeight){c.scrollTop = _this.lineHeight;return;} c.scrollTop += _this.config.num; _this.scrollTimeId = setTimeout(function(){_this.scrollUp();}, _this.config.speed); }; this.scrollDown = function (){ var c = _this.container; if(c.scrollTop <= 0){c.scrollTop = 0;return;} c.scrollTop -= _this.config.num; _this.scrollTimeId = setTimeout(function(){_this.scrollDown();}, _this.config.speed); }; this.clear = function (){clearTimeout(_this.scrollTimeId)}; } (function(){ var container = document.getElementById('nav'); var el_li = container.getElementsByTagName('li'); var arr = []; for( var i = 0; i < el_li.length; i++){ if(el_li[i].className == 'on') continue; arr[i] = new nav(el_li[i], {speed: 10, num: 4}); } }) (); /* ]]> */ </script> </body> </html>

[Ctrl+A 全选注:引入外部Js需再刷新一下页面才能执行]

如果大家不喜欢这个颜色，可以修改代码中的图片的颜色即可。

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javascript实现的鼠标悬停时动态翻滚的导航条

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