JS implements closeable couplet advertising effect code_javascript skills-JS Tutorial-php.cn

JS implements closeable couplet advertising effect code_javascript skills

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Release： 2016-05-16 15:39:26

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The example in this article describes the JS implementation of the closeable couplet advertising effect code. Share it with everyone for your reference. The details are as follows:

This is a very classic couplet advertising code with a close button. Users can turn off the ad by themselves. In addition, the vertical position of the ad will be automatically positioned as the scroll bar changes, that is, dragging the browser scroll bar The advertisement is always displayed and will not be hidden. Nowadays, many websites are using the couplet advertising code.

The screenshot of the running effect is as follows:

The online demo address is as follows:

http://demo.jb51.net/js/2015/js-close-able-2adv-style-codes/

The specific code is as follows:

<html>
<head>
<title>对联广告</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body style="margin:0px;">
<div align="center">
 <center>
 <table border="1" width="776" height="3000" cellspacing="0" cellpadding="0">
 <tr>
 <td width="100%" valign="top"><div align="center">页面区域</div></td>
 </tr>
 </table>
 </center>
</div>
<SCRIPT LANGUAGE="JavaScript">
<!--
var showad = true;
var Toppx = 60;//上端位置
var AdDivW = 100;//宽度
var AdDivH = 360;//高度
var PageWidth = 800;//这个参数决定是否出现左右滚动条
var MinScreenW = 1024; //显示广告的最小屏幕宽度象素
var ClosebuttonHtml = '<div align="right" style="position: absolute;top:0px;right:0px;margin:2px;padding:2px;z-index:2000;"><a href="javascript:;" onclick="hidead()" style="color:red;text-decoration:none;font-size:12px;">关闭</a></div>'
var AdContentHtml = '<div align="center"><br><br>广<br>告<br>内<br>容</div>';
document.write ('<div id="Javascript.LeftDiv" style="position: absolute;border: 1px solid #336699;background-color:#EEEEE2;z-index:1000;width:'+AdDivW+'px;height:'+AdDivH+'px;top:-1000px;word-break:break-all;display:none;">'+ClosebuttonHtml+'<div>'+AdContentHtml+'</div></div>');
document.write ('<div id="Javascript.RightDiv" style="position: absolute;border: 1px solid #336699;background-color:#EEEEE2;z-index:1000;width:'+AdDivW+'px;height:'+AdDivH+'px;top:-1000px;word-break:break-all;display:none;">'+ClosebuttonHtml+'<div>'+AdContentHtml+'</div></div>');
function scall(){
 if(!showad){return;}
 if (window.screen.width<MinScreenW){
  alert("临时提示：
\n显示器分辨率宽度小于"+MinScreenW+",不显示广告");
  showad = false;
  document.getElementById("Javascript.LeftDiv").style.display="none";
  document.getElementById("Javascript.RightDiv").style.display="none";
  return;
 }
 var Borderpx = ((window.screen.width-PageWidth)/2-AdDivW)/2;
 document.getElementById("Javascript.LeftDiv").style.display="";
 document.getElementById("Javascript.LeftDiv").style.top=document.body.scrollTop+Toppx;
 document.getElementById("Javascript.LeftDiv").style.left=document.body.scrollLeft+Borderpx;
 document.getElementById("Javascript.RightDiv").style.display="";
 document.getElementById("Javascript.RightDiv").style.top=document.body.scrollTop+Toppx;
 document.getElementById("Javascript.RightDiv").style.left=document.body.scrollLeft+document.body.clientWidth-document.getElementById("Javascript.RightDiv").offsetWidth-Borderpx;
}
function hidead()
{
 showad = false;
 document.getElementById("Javascript.LeftDiv").style.display="none";
 document.getElementById("Javascript.RightDiv").style.display="none";
}
window.onscroll=scall;
window.onresize=scall;
window.onload=scall;
//-->
</SCRIPT>
</body>
</html>

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I hope this article will be helpful to everyone’s JavaScript programming.