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1、当鼠标移入后,菜单显示成高亮;移出后恢复
2、在1的基础上,单击某个菜单项,该项保持高亮(页面不刷新)
3、在1的基础上,单击某个菜单项,该项保持高亮(页面刷新)
4、当鼠标移入后,改变菜单的背景图片,与1效果类似

1、这是最基本的一步,基本上要求菜单高亮显示的,这个需求会同时存在;这里我们用CSS来解决这个需求;
<!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=gb2312" />
<title>Menu Test</title>
</head>
<style>
.Pmenus, .Pmenus ul {margin:0;padding:0;}
.Pmenus li {
  list-style:none;width:90px;height:25px;font-weight:bold;text-align:left;line-height:25px;margin:0;padding:0 0 2px 0;background:#AE359F;
}
.Pmenus li a {display:block;font-size:12px;font-family:Arial;text-decoration:none;}
.Pmenus li a:link, .Pmenus li a:visited {color:#EEEEEE;padding:0 3px;}
.Pmenus li a:hover {background: #F9B7E7;color:#AD1788;padding:0 3px;}
li.focusurl a {background: #F9B7E7;color:#AD1788;}
</style>
<body>
    <div id="primarymenu" class="Pmenus"><ul>
    <li><a href="#"> Home </a></li>
    <li><a href="#"> Hotel </a></li>
    <li><a href="#"> Hotel Package </a></li>
    <li><a href="#"> Promotion </a></li>
    <li><a href="#"> My Booking </a></li>
    <li><a href="#"> Help </a></li>
    <li><a href="#"> Contact us </a></li>
    <li><a href="#"> Log Out </a></li>
    </ul></div>
</body>
</html>
2、好,现在可以看到,第一点需求所要求的效果已经达到了,下面我们来实现第二个需求;这个就需要JS来实现了,简单一点,加入一段JavaScript
<!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=gb2312" />
<title>Menu Test</title>
</head>
<style>
.Pmenus, .Pmenus ul {margin:0;padding:0;}
.Pmenus li {
  list-style:none;width:90px;height:25px;font-weight:bold;text-align:left;line-height:25px;margin:0;padding:0 0 2px 0;background:#AE359F;
}
.Pmenus li a {display:block;font-size:12px;font-family:Arial;text-decoration:none;}
.Pmenus li a:link, .Pmenus li a:visited {color:#EEEEEE;padding:0 3px;}
.Pmenus li a:hover {background: #F9B7E7;color:#AD1788;padding:0 3px;}
li.focusurl a {background: #F9B7E7;color:#AD1788;}
</style>
<script type="text/javascript">
var lastClick;
window.onload=function(){
    var divObj = document.getElementById("primarymenu");
    aList = divObj.getElementsByTagName("a");
    var listCount = aList.length;
    for (var i=0;i<listCount;i++){
        aList[i].onclick = function(){
            this.parentNode.className = "focusurl";
            if ( lastClick && lastClick !=this)
                lastClick.parentNode.className ="";
            lastClick = this;    
        }
    }
}
</script>
<body>
    <div id="primarymenu" class="Pmenus"><ul>
    <li><a href="#"> Home </a></li>
    <li><a href="#"> Hotel </a></li>
    <li><a href="#"> Hotel Package </a></li>
    <li><a href="#"> Promotion </a></li>
    <li><a href="#"> My Booking </a></li>
    <li><a href="#"> Help </a></li>
    <li><a href="#"> Contact us </a></li>
    <li><a href="#"> Log Out </a></li>
    </ul></div>
</body>
</html>
3、OK,上面的页面不刷新的情况,一旦页面刷新,效果就没有了,这时候怎么办呢?没关系,我们尝试另外一段JS代码来达到这个效果,虽然代码有点长:
【这段代码也是我在网上搜索而来,但是对其中一些代码片段不敢苟同,因此做了修改;而且这段JS的扩展性不够好,每次使用都必须根据实际情况进行修改】
【这段代码只是做个示范,运行的话应该不会出现效果,实际的网站例子在5那边有链接】
<!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=gb2312" />
<title>Menu Test</title>
</head>
<style>
.Pmenus, .Pmenus ul {margin:0;padding:0;}
.Pmenus li {
  list-style:none;width:90px;height:25px;font-weight:bold;text-align:left;line-height:25px;margin:0;padding:0 0 2px 0;background:#AE359F;
}
.Pmenus li a {display:block;font-size:12px;font-family:Arial;text-decoration:none;}
.Pmenus li a:link, .Pmenus li a:visited {color:#EEEEEE;padding:0 3px;}
.Pmenus li a:hover {background: #F9B7E7;color:#AD1788;padding:0 3px;}
li.focusurl a {background: #F9B7E7;color:#AD1788;}
</style>
<script type="text/javascript">
var lastClick;
window.onload=function(){
    var divObj = document.getElementById("primarymenu");
    aList = divObj.getElementsByTagName("a");
    var listCount = aList.length;
    for (var i=0;i<listCount;i++){
        aList[i].onclick = function(){
            this.parentNode.className = "focusurl";
            if ( lastClick && lastClick !=this)
                lastClick.parentNode.className ="";
            lastClick = this;    
        }
    }
}
var tp;
var url = location.pathname+location.search;
var arr = new Array();
// 这里需要你输入一些自己的URL
arr.push( BASE_URL);
arr.push( BASE_URL + "home" );
arr.push( BASE_URL + "hotel" );
arr.push( BASE_URL + "package" );
arr.push( BASE_URL + "promotion" );
arr.push( BASE_URL + "mybooking" );
arr.push( BASE_URL + "help" );
arr.push( BASE_URL + "contactus" );
arr.push( BASE_URL + "user/login" );
arr.push( BASE_URL + "logout" );
for(i=0;i<arr.length;i++) {
  if(url.lastIndexOf(arr[ i ]) > -1) {
    tp=i;
  }
}
var dv = document.getElementById("primarymenu");
var lk = dv.getElementsByTagName("a");
var link_index;
for(i=0;i<arr.length;i++) { 
// 注意这里,与参考的资料上不一样,我做了改动【原先是获取lk的长度】
  if(i == tp) {
    switch(i) {
      case 0:
      case 1:
        link_index = 0;
        break;
      case 2:
      case 3:
      case 4:
      case 5:
      case 6:
      case 7:
        link_index = i - 1;
        break;
      case 8:
      case 9:
        link_index = 7;
        break;
     }
  }
}
lk[ link_index ].style.fontWeight="bold";
lk[ link_index ].style.color="#AD1788";
lk[ link_index ].style.background="#F9B7E7";
lk[ link_index ].style.padding="0 3px";
lk[ link_index ].className="focusurl";
</script>
<body>
    <div id="primarymenu" class="Pmenus"><ul>
    <li><a href="#"> Home </a></li>
    <li><a href="#"> Hotel </a></li>
    <li><a href="#"> Hotel Package </a></li>
    <li><a href="#"> Promotion </a></li>
    <li><a href="#"> My Booking </a></li>
    <li><a href="#"> Help </a></li>
    <li><a href="#"> Contact us </a></li>
    <li><a href="#"> Log Out </a></li>
    </ul></div>
</body>
</html>
posted on 2009-08-03 23:18 扭曲的铅笔 阅读(375) 评论(0)  编辑  收藏 所属分类: J2EE

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