下拉渐显菜单

最新推荐文章于 2025-08-05 15:28:01 发布

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最新推荐文章于 2025-08-05 15:28:01 发布

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CC 4.0 BY-SA版权

文章标签： javascript ViewUI

原文链接：http://www.cnblogs.com/crmhf/p/3823198.html

本文介绍了一种使用HTML和JavaScript实现的下拉菜单渐显效果的方法。通过简单的代码示例展示了如何创建带有渐显动画的下拉菜单，并且可以根据需求调整参数来开启或关闭渐显效果。

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<html>
<head>
<style>

</style>
</head>
<body>
<center>
<h1>下拉菜单的渐显效果</h1>
</center>

<ilayer id="dropmenu01" height=35px>
<layer id="dropmenu02" visibility=show>
<span id="iewrap">
<span id="iewrap2" onClick="dropit2();event.cancelBubble=true;return false">
<font face="宋体"><a href="#">点这里查看本站栏目</a></font>
</span>
</span>
</layer>
</ilayer>
<script language="JavaScript1.2">
//如果想关闭 "fade"（消隐）效果，将如下参数设置成false，适用于IE用户。
var enableeffect=true
//将如下数组修改成你自己的。
var selection=new Array()
selection[0]='<font face="宋体"><a href="link1.htm">链接之一</a></font><br>'
selection[1]='<font face="宋体"><a href="link2.htm">链接之二</a></font><br>'
selection[2]='<font face="宋体"><a href="link3.htm">链接之三</a></font><br>'
selection[3]='<font face="宋体"><a href="link4.htm">链接之四</a></font><br>'
selection[4]='<font face="宋体"><a href="link5.htm">链接之五</a></font>'
if (document.layers)
document.dropmenu01.document.dropmenu02.visibility='show'
function dropit2(){
if (document.all){
dropmenu03.style.left=document.body.scrollLeft+event.clientX-event.offsetX
dropmenu03.style.top=document.body.scrollTop+event.clientY-event.offsetY+18
if (dropmenu03.style.visibility=="hidden"){
if (enableeffect)
dropmenu03.filters.revealTrans.apply()
dropmenu03.style.visibility="visible"
if (enableeffect)
dropmenu03.filters.revealTrans.play()
}
else{
hidemenu()
}
}
}
function dropit(e){
if (document.dropmenu03.visibility=="hide")
document.dropmenu03.visibility="show"
else
document.dropmenu03.visibility="hide"
document.dropmenu03.left=e.pageX-e.layerX
document.dropmenu03.top=e.pageY-e.layerY+19
return false
}
function hidemenu(){
if (enableeffect)
dropmenu03.filters.revealTrans.stop()
dropmenu03.style.visibility="hidden"
}
function hidemenu2(){
document.dropmenu03.visibility="hide"
}
if (document.layers){
document.dropmenu01.document.dropmenu02.captureEvents(Event.CLICK)
document.dropmenu01.document.dropmenu02.onclick=dropit
}
else if (document.all)
document.body.onclick=hidemenu
</script>
<div id="dropmenu03" style="position:absolute;left:0;top:0;layer-background-color:seashell;background-color:seashell;width:100;visibility:hidden;border:1px solid black;padding:0px">
<script language="JavaScript1.2">
if (document.all)
dropmenu03.style.padding='4px'
for (i=0;i<selection.length;i++)
document.write(selection[i])
</script>
</div>
<script language="JavaScript1.2">
if (document.layers){
document.dropmenu03.captureEvents(Event.CLICK)
document.dropmenu03.onclick=hidemenu2
}
</script>