It can run under the w3c declaration and has good compatibility. js couplet advertising collection_javascript skills

最后我们给出合适的代码:
核心代码:

复制代码 代码如下:

lastScrollY=0;
function heartBeat(){
var diffY;
if (document.documentElement && document.documentElement.scrollTop)
diffY = document.documentElement.scrollTop;
else if (document.body)
diffY = document.body.scrollTop
else
{/*Netscape stuff*/}

//alert(diffY);
percent=.1*(diffY-lastScrollY);
if(percent>0)percent=Math.ceil(percent);
else percent=Math.floor(percent);
document.getElementById("leftDIV").style.top=parseInt(document.getElementById("leftDIV").style.top) percent "px";
document.getElementById("rightDIV").style.top=parseInt(document.getElementById("leftDIV").style.top) percent "px";

lastScrollY=lastScrollY percent;
//alert(lastScrollY);
}

sidebar1= "

"
sidebar2= "

"

document.write(sidebar1);
document.write(sidebar2);

//下面这段删除后，对联将不跟随屏幕而移动。
window.setInterval("heartBeat()",1);
//-->

function closeAD()
{
document.getElementById("leftDIV").style.display='none';
document.getElementById("rightDIV").style.display='none';
}

为了防止冲突，我们修改后的代码：
因为客户只需要右侧的代码，左侧的我们留空。

复制代码 代码如下:

lastScrollY=0;
function heartBeat2(){
var diffY;
if (document.documentElement && document.documentElement.scrollTop)
diffY = document.documentElement.scrollTop;
else if (document.body)
diffY = document.body.scrollTop
else
{/*Netscape stuff*/}

//alert(diffY);
percent=.1*(diffY-lastScrollY);
if(percent>0)percent=Math.ceil(percent);
else percent=Math.floor(percent);
document.getElementById("leftDIV2").style.top=parseInt(document.getElementById("leftDIV2").style.top) percent "px";
document.getElementById("rightDIV2").style.top=parseInt(document.getElementById("leftDIV2").style.top) percent "px";

lastScrollY=lastScrollY percent;
//alert(lastScrollY);
}

sidebar1= "

"
sidebar2= "

"

document.write(sidebar1);
document.write(sidebar2);

//下面这段删除后，对联将不跟随屏幕而移动。
window.setInterval("heartBeat2()",1);
//-->
function closeAD()
{
document.getElementById("leftDIV2").style.display='none';
document.getElementById("rightDIV2").style.display='none';
}

后来经过网上查找，又发现了一个不错的代码

<style> html,body{margin:0;font-family:Arial;font-size:12px;} #ad1,#ad2{position:absolute;float:left;width:100px;overflow:hidden; } #ad2{right:0;} #killAd1,#killAd2{position:absolute;bottom:10px;right:10px;cursor:pointer;border:1px solid #990000;padding:0 5px;background:red;color:#fff; } </style> <div id="ad1"> <span id="killAd1"> </span>x<img src="/static/imghw/default1.png" data-src="http://files.jb51.net/upload/201107/20110713115423968.jpg" class="lazy" border="0" alt="" title=""> </div> <div id="ad2"> <span id="killAd2"> </span>x<img src="/static/imghw/default1.png" data-src="http://files.jb51.net/upload/201107/20110713115423968.jpg" class="lazy" border="0" alt="" title=""> </div> <script> var fx=function(uid,kill){ var f=this,$=function(x){return document.getElementById(x)}; f.top=f.offset=20; f.ad=$(uid); $(kill).onclick=function(){f.die()}; f.timer=setInterval(function(){f.dll()},13); }; fx.prototype={ dll:function(){ var f=this,d=document,to=Math.max(d.body.scrollTop,d.documentElement.scrollTop); if(f.top!=to){ var d=(to-f.top)*0.1,mx=Math[d>0?'ceil':'floor']; f.top+=parseInt(mx(d)); f.ad.style.top=f.top+f.offset+'px'; }; }, die:function (){ this.ad.style.display='none'; clearInterval(this.timer); } }; window.onload = function (){ new fx('ad1','killAd1'); new fx('ad2','killAd2'); }; </script> <p style="height:20000px;"></p>
[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]

Js对联广告代码
经典的对联广告代码，JS代码实现，很简洁，也是通用的代码，随着滚动条的滚动自动适应，对联大小由CSS控制，这使得代码修改起来更加方便快捷，不懂JS也没有关系。不过本代码有一处遗憾就是没有关闭功能，真想用的可以自己加一个。

<meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <title></title>