间歇滚动公告板

<!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" c />
<meta name="keywords" c />
<meta name="description" c />
<title>用 Javascript 制作可暂停的滚动公告板 - 可暂停, 滚动, 公告板, Javascript, js特效, </title>
</head>
<body>
<div id="example">
<h3 id="example_title">&nbsp;Javascript&nbsp;制作可暂停的滚动公告板</h3>
<div id="example_main">
<!--************************************* 实例代码开始 *************************************-->
<style type="text/css">
/*Example CSS for the two demo scrollers*/
#pscroller1
{
width: 200px;
height: 100px;
border: 1px solid black;
padding: 5px;
background
-color: lightyellow;
}

#pscroller2
{
width: 450px;
height: 22px;
border: 1px solid black;
padding: 3px;
}

#pscroller2 a
{
text
-decoration: none;
}

.someclass
//class to apply to your scroller(s) if desired
}

</style>
<script type="text/javascript">
/*Example message arrays for the two demo scrollers*/
var pausec Array()
pausecontent[
0]='<a href="http://www.yitu.org">艺图</a><br />欣赏高质量的国外艺术大师作品图片。欣赏经典名作,体味艺术人生。'
pausecontent[
1]='<a href="CodeBit.cnhttp://www.codebit.cn">CodeBit.cn</a><br />收录经典小段代码,翻译转载国外优秀技术文章。'
var pausecontent2
=new Array()
pausecontent2[
0]='<a href="http://www.yitu.org">【艺图】 欣赏高质量的国外艺术大师作品图片。欣赏经典名作,体味艺术人生。</a>'
pausecontent2[
1]='<a href="http://www.codebit.cn">【CodeBit.cn】 收录经典小段代码,翻译转载国外优秀技术文章。</a> '
</script>
<script type="text/javascript">
/***********************************************
* Pausing up-down scroller- ? Dynamic Drive (www.dynamicdrive.com)
* This notice MUST stay intact for legal use
* Visit 
http://www.dynamicdrive.com/ for this script and 100s more.
**********************************************
*/

function pausescroller(content, divId, divClass, delay)
{
this.c //message array content
this.tickerid=divId //ID of ticker div to display information
this.delay=delay //Delay between msg change, in miliseconds.
this.mouseoverBol=0 //Boolean to indicate whether mouse is currently over scroller (and pause it if it is)
this.hiddendivpointer=1 //index of message array for hidden div
document.write('<div id="'+divId+'" class="'+divClass+'" style="position: relative; overflow: hidden"><div class="innerDiv" style="position: absolute; width: 100%" id="'+divId+'1">'+content[0]+'</div><div class="innerDiv" style="position: absolute; width: 100%; visibility: hidden" id="'+divId+'2">'+content[1]+'</div></div>')
var scrollerinstance
=this
if (window.addEventListener) //run onload in DOM2 browsers
window.addEventListener("load", function(){scrollerinstance.initialize()}false)
else if (window.attachEvent) //run onload in IE5.5+
window.attachEvent("onload", function(){scrollerinstance.initialize()})
else if (document.getElementById) //if legacy DOM browsers, just start scroller after 0.5 sec
setTimeout(function(){scrollerinstance.initialize()}500)
}

// -------------------------------------------------------------------
// initialize()- Initialize scroller method.
// -Get div objects, set initial positions, start up down animation
// -------------------------------------------------------------------
pausescroller.prototype.initialize=function(){
this.tickerdiv=document.getElementById(this.tickerid)
this.visiblediv=document.getElementById(this.tickerid+"1")
this.hiddendiv=this.hiddendiv=document.getElementById(this.tickerid+"2")
this.visibledivtop=parseInt(pausescroller.getCSSpadding(this.tickerdiv))
//set width of inner DIVs to outer DIV's width minus padding (padding assumed to be top padding x 2)
this.visiblediv.style.width=this.hiddendiv.style.width=this.tickerdiv.offsetWidth-(this.visibledivtop*2)+"px"
this.getinline(this.visiblediv, this.hiddendiv)
this.hiddendiv.style.visibility="visible"
var scrollerinstance
=this
this.tickerdiv.(){scrollerinstance.mouseoverBol=1}
this.tickerdiv.(){scrollerinstance.mouseoverBol=0}
setTimeout(function()
{scrollerinstance.animateup()}this.delay)
}

// -------------------------------------------------------------------
// animateup()- Move the two inner divs of the scroller up and in sync
// -------------------------------------------------------------------
pausescroller.prototype.animateup=function(){
var scrollerinstance
=this
if (parseInt(this.hiddendiv.style.top)>(this.visibledivtop+5)){
this.visiblediv.style.top=parseInt(this.visiblediv.style.top)-5+"px"
this.hiddendiv.style.top=parseInt(this.hiddendiv.style.top)-5+"px"
setTimeout(function()
{scrollerinstance.animateup()}50)
}
else{
this.getinline(this.hiddendiv, this.visiblediv)
this.swapdivs()
setTimeout(function()
{scrollerinstance.setmessage()}this.delay)
}

}

// -------------------------------------------------------------------
// swapdivs()- Swap between which is the visible and which is the hidden div
// -------------------------------------------------------------------
pausescroller.prototype.swapdivs=function(){
var tempc.visiblediv
this.visiblediv=this.hiddendiv
this.hiddendiv=tempcontainer
}

pausescroller.prototype.getinline
=function(div1, div2){
div1.style.top
=this.visibledivtop+"px"
div2.style.top
=Math.max(div1.parentNode.offsetHeight, div1.offsetHeight)+"px"
}

// -------------------------------------------------------------------
// setmessage()- Populate the hidden div with the next message before it's visible
// -------------------------------------------------------------------
pausescroller.prototype.setmessage=function(){
var scrollerinstance
=this
if (this.mouseoverBol==1//if mouse is currently over scoller, do nothing (pause it)
setTimeout(function(){scrollerinstance.setmessage()}100)
else{
var i
=this.hiddendivpointer
var ceiling
=this.content.length
this.hiddendivpointer=(i+1>ceiling-1)? 0 : i+1
this.hiddendiv.innerHTML=this.content[this.hiddendivpointer]
this.animateup()
}

}

pausescroller.getCSSpadding
=function(tickerobj)//get CSS padding value, if any
if (tickerobj.currentStyle)
return tickerobj.currentStyle["paddingTop"]
else if (window.getComputedStyle) //if DOM2
return window.getComputedStyle(tickerobj, "").getPropertyValue("padding-top")
else
return 0
}

</script>
<script type="text/javascript">
//new pausescroller(name_of_message_array, CSS_ID, CSS_classname, pause_in_miliseconds)
new pausescroller(pausecontent, "pscroller1""someclass"3000)
document.write(
"<br />")
new pausescroller(pausecontent2, "pscroller2""someclass"2000)
</script>
<!--************************************* 实例代码结束 *************************************-->
</div>
</div>
<br />
</body>
</html>
posted @ 2008-02-14 19:09  龍峸.大卫  阅读(380)  评论(0编辑  收藏  举报