利用scrollTop 制作图片无缝滚动
<!doctype html>
<title>javascript無縫滾動 by 司徒正美</title>
<meta charset="utf-8"/>
<meta name="keywords" content="javascript無縫滾動 by 司徒正美" />
<meta name="description" content="javascript無縫滾動 by 司徒正美" />
<style type="text/css">
h1 {
font:400 16px/1 "Microsoft YaHei",KaiTi_GB2312,SimSun
}
#marquee {
height:300px;
width:200px;
overflow:hidden;
position:relative;
border:10px solid #F2F1D7;
}
#marquee img {
display:block;
}
#marquee dd {
margin:0px;
padding:0px;
}
</style>
<script type="text/javascript">
var Marquee = function(id){
try{document.execCommand("BackgroundImageCache", false, true);}catch(e){};
var container = document.getElementById(id),
original = container.getElementsByTagName("dt")[0],
clone = container.getElementsByTagName("dd")[0],
speed = arguments[1] || 10;
clone.innerHTML=original.innerHTML;
alert(clone.offsetTop)
container.scrollTop = clone.offsetTop;
var rolling = function(){
if(container.scrollTop == 0){
container.scrollTop = clone.offsetTop;
}else{
container.scrollTop--;
}
}
var timer = setInterval(rolling,speed)//設置定時器
container.οnmοuseοver=function() {clearInterval(timer)}//鼠標移到marquee上時，清除定時器，停止滾動
container.οnmοuseοut=function() {timer=setInterval(rolling,speed)}//鼠標移開時重設定時器
}
window.onload = function(){
Marquee("marquee");
}
</script>
<h1>javascript無縫滾動(向下滾動) by 司徒正美</h1>
<dl id="marquee">
<dt>
<img src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s017.jpg" alt="javascript無縫滾動 by 司徒正美"/>
<img src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s018.jpg" alt="javascript無縫滾動 by 司徒正美"/>
<img src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s019.jpg" alt="javascript無縫滾動 by 司徒正美"/>
<img src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s020.jpg" alt="javascript無縫滾動 by 司徒正美"/>
<img src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s021.jpg" alt="javascript無縫滾動 by 司徒正美"/>
<img src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s022.jpg" alt="javascript無縫滾動 by 司徒正美"/>
<img src="http://images.cnblogs.com/cnblogs_com/rubylouvre/199042/o_s023.jpg" alt="javascript無縫滾動 by 司徒正美"/>
</dt>
<dd></dd>
</dl>
轉載于:https://www.cnblogs.com/zhengyan/p/5000394.html
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