时间：2021-02-13 11:13:36 | 栏目：JavaScript代码 | 点击：次
1、准备一张二维码图片，大小、图片自己定义我这里用的宽度和高度都是253，名称weixin.jpg
<!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>二维码图片固定在右下角某处并跟随滚动条滚动</title>
</head>
<body>
<div style="width:1000px; height:1000px;">二维码图片固定在右下角某处并跟随滚动条滚动</div>
<script language="javascript">
function wx_scroll(){
var topH=-80;
var leftW=10;
var sHeight,sWidth,cHeight;
//alert(document.documentElement.clientWidth);
(document.body.scrollLeft==0)?sWidth=document.documentElement.scrollLeft + document.documentElement.clientWidth - 260 :sWidth=document.body.scrollLeft+ document.documentElement.clientWidth - 260 ;
(document.body.scrollTop==0)?sHeight=document.documentElement.scrollTop+ document.documentElement.clientHeight - 260 :sHeight=document.body.scrollTop+ document.documentElement.clientHeight - 260;
document.getElementById("bar_float").style.left=eval(sWidth+leftW) +"px";
document.getElementById("bar_float").style.top=eval(sHeight+topH) +"px";
}
setInterval("wx_scroll()",100);
</script>
<div id="bar_float" style="position: absolute; display:block; z-index: 10000; left: 1216px; top: -80px;">
<div id="stayTopleft">
<table cellspacing="0" cellpadding="0" border="0">
<tbody>
<tr>
<td colspan="2" valign="top"><img src="weixin.jpg" width="253" height="253" border="0"></td>
</tr>
<tr>
</table></div>
</div>
</body>
</html>