Home >Web Front-end >JS Tutorial >Javascript implements navigation menu effect with drop-down submenu_javascript skills
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。