js下拉菜单

来源：互联网发布：手机遥控麻将机软件编辑：程序博客网时间：2024/05/23 12:05

js下拉菜单制作

<ul id="nav">  <li><a href="#">首页</a></li>  <li><a href="#">菜单一</a>    <ul>      <li><a href="#">菜单一</a></li>      <li><a href="#">菜单一</a></li>      <li><a href="#">菜单一</a></li>      <li><a href="#">菜单一</a></li>      <li><a href="#">菜单一</a></li>    </ul>  </li>  <li><a href="#">菜单二</a>    <ul>      <li><a href="#">菜单二</a></li>      <li><a href="#">菜单二</a></li>      <li><a href="#">菜单二</a></li>      <li><a href="#">菜单二</a></li>    </ul>  </li>  <li><a href="#">菜单三</a>    <ul>      <li><a href="#">菜单三</a></li>      <li><a href="#">菜单三</a></li>      <li><a href="#">菜单三</a></li>      <li><a href="#">菜单三</a></li>    </ul>  </li>  <li><a href="#">菜单四</a>    <ul>      <li><a href="#">菜单四</a></li>      <li><a href="#">菜单四</a></li>      <li><a href="#">菜单四</a></li>      <li><a href="#">菜单四</a></li>      <li><a href="#">菜单四</a></li>      <li><a href="#">菜单四</a></li>    </ul>  </li>  <li><a href="#">菜单五</a>    <ul>      <li><a href="#">菜单五</a></li>      <li><a href="#">菜单五</a></li>      <li><a href="#">菜单五</a></li>      <li><a href="#">菜单五</a></li>      <li><a href="#">菜单五</a></li>      <li><a href="#">菜单五</a></li>    </ul>  </li></ul>

css部分

* {margin:0;padding:0;border:0;}body {font-family: arial, 宋体, serif;font-size:12px;}#nav {line-height: 24px;list-style-type: none;background:#666;}#nav a {display: block;width: 80px;text-align:center;}#nav a:link {color:#666;text-decoration:none;}#nav a:visited {color:#666;text-decoration:none;}#nav a:hover {color:#FFF;text-decoration:none;font-weight:bold;}#nav li {float: left;width: 80px;background:#CCC;}#nav li a:hover {background:#999;}#nav li ul {line-height: 27px;list-style-type: none;text-align:left;left: -999em;width: 180px;position: absolute;}#nav li ul li {float: left;width: 180px;background: #F6F6F6;}#nav li ul a {display: block;width: 156px;text-align:left;padding-left:24px;}#nav li ul a:link {color:#666;text-decoration:none;}#nav li ul a:visited {color:#666;text-decoration:none;}#nav li ul a:hover {color:#F3F3F3;text-decoration:none;font-weight:normal;background:#C00;}#nav li:hover ul {left: auto;}#nav li.sfhover ul {left: auto;}#content {clear: left;}

js部分

function menuFix() {          var sfEls = document.getElementById("nav").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=" ";          }      } } window.onload=menuFix;

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