可以展开、收缩的顶部滑动广告
本帖最后由 小麦子 于 2024-10-18 23:51 编辑可以展开、收缩的网页顶部滑动广告代码，JavaScript实现。当打开网页的时候，它会自动慢慢展开，停留几秒钟后就自动慢慢收缩消失。在一些门户网站我们会看到这种广告效果。
<!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>
<title>可以展开、收缩的顶部滑动广告</title>
<meta http-equiv="mrc-type" mrc="text/html;charset=utf-8">
<style type="text/css">
body{margin:0;}
</style>
<script type="text/javascript">
var intervalId = null;
function slideAd(id,nStayTime,sState,nMaxHth,nMinHth){
this.stayTime=nStayTime*1000 || 3000;
this.maxHeigth=nMaxHth || 90;
this.minHeigth=nMinHth || 1;
this.state=sState || "down" ;
var obj = document.getElementById(id);
if(intervalId != null)window.clearInterval(intervalId);
function openBox(){
var h = obj.offsetHeight;
obj.style.height = ((this.state == "down") ? (h + 2) : (h - 2))+"px";
if(obj.offsetHeight>this.maxHeigth){
window.clearInterval(intervalId);
intervalId=window.setInterval(closeBox,this.stayTime);
}
if (obj.offsetHeight<this.minHeigth){
window.clearInterval(intervalId);
obj.style.display="none";
}
}
function closeBox(){
slideAd(id,this.stayTime,"up",nMaxHth,nMinHth);
}
intervalId = window.setInterval(openBox,10);
}
</script>
</head>
<body>
<div id="MyMoveAd" style="background:skyblue;height:12px;text-align:center;overflow:hidden;">
这里放广告内容哦！
</div>
<script type="text/javascript">
<!--
slideAd('MyMoveAd',2);
-->
</script>
</body>
</html>
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