js放到body中的问题
<!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>无标题文档</title>
</head>
<body>
<div id=demo style=overflow:hidden;height:139px;width:432px;><table align=left cellpadding=0 cellspace=0 border=0><tr><td id=demo1 valign=top><a href="#"><img src="http://www.lanrentuku.com/down/js/images/12460764740.jpg"></a><a href="#"><img src="http://www.lanrentuku.com/down/js/images/12460764741.jpg"></a><a href="#"><img src="http://www.lanrentuku.com/down/js/images/12460764742.jpg"></a><a href="#"><img src="http://www.lanrentuku.com/down/js/images/12460764743.jpg"></a><a href="#"><img src="http://www.lanrentuku.com/down/js/images/12460764744.jpg"></a></td><td id=demo2 valign=top></td></tr></table></div>
</body><script> var speed=30
demo2.innerHTML=demo1.innerHTML
function Marquee(){
if(demo2.offsetWidth-demo.scrollLeft<=0)
demo.scrollLeft-=demo1.offsetWidth
else{
demo.scrollLeft++
}
}
var MyMar=setInterval(Marquee,speed)
demo.onmouseover=function() {clearInterval(MyMar)}
demo.onmouseout=function() {MyMar=setInterval(Marquee,speed)}</script>
</html>
把body和head内的内容去掉就能用。。
这个写法错了吧 demo2都未定义
最好是把<script>放到head中或放到html后面。本回答被提问者采纳
