这篇文章主要介绍了javascript实现带下拉子菜单的导航菜单效果的方法,涉及javascript操作页面元素与样式的相关技巧,需要的朋友可以参考下
本文实例讲述了javascript实现带下拉子菜单的导航菜单效果。分享给大家供大家参考。具体实现方法如下：
- <!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=utf-8" />
- <title>带下拉子菜单的导航菜单</title>
- <style type="text/css">
- body { font-family: Verdana; font-size: 12px; line-height: 1.5; }
- a { color: #000; text-decoration: none; }
- a:hover { color: #F00; }
- #menu { width:500px; height:28px; margin:0 auto; border-bottom:3px solid #E10001;}
- #menu ul { list-style: none; margin: 0px; padding: 0px; }
- #menu ul li { float:left; margin-left:2px;}
- #menu ul li a { display:block; width:87px; height:28px; line-height:28px; text-align:center; font-size:14px;}
- #menu ul li a#current { font-weight:bold; color:#fff;}
- #menu ul li ul { border:1px solid #ccc; display:none; position:absolute;}
- #menu ul li ul li { float:none; width:87px; background:#eee; margin:0;}
- #menu ul li ul li a { background:none;}
- #menu ul li ul li a:hover { background:#333; color:#fff;}
- #menu ul li:hover ul { display:block;}
- #menu ul li.sfhover ul { display:block;}
- </style>
- <script type="text/javascript"><!-- //--><![CDATA[//><!--
- function menuFix() {
- var sfEls = document.getElementById("menu").getElementsByTagName("li");
- for (var i = 0; i < sfEls.length; i++) {
- sfEls[i].onmouseover = function () {
- this.className += (this.className.length > 0 ? " " : "") + "sfhover";
- }
- sfEls[i].onMouseDown = function () {
- this.className += (this.className.length > 0 ? " " : "") + "sfhover";
- }
- sfEls[i].onMouseUp = function () {
- this.className += (this.className.length > 0 ? " " : "") + "sfhover";
- }
- sfEls[i].onmouseout = function () {
- this.className = this.className.replace(new RegExp("( ?|^)sfhover//b"),
- "");
- }
- }
- }
- window.onload = menuFix;
- //--><!]]>
- </script>
- </head>
- <body>
- <div id="menu">
- <ul>
- <li><a id="current" href="#">首页</a></li>
- <li><a href="#">网页版式</a>
- <ul>
- <li><a href="#">自适应宽度</a></li>
- <li><a href="#">固定宽度</a></li>
- </ul>
- </li>
- <li><a href="#">web教程</a>
- <ul>
- <li><a href="#">新手入门</a></li>
- <li><a href="#">视频教程</a></li>
- <li><a href="#">常见问题</a></li>
- </ul>
- </li>
- <li><a href="#">web实例</a></li>
- <li><a href="#">常用代码</a></li>
- </ul>
- </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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