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div浮层,滚动条移动,保持位置不变的4种方法

2016-03-17 15:19 459 查看

div浮层,滚动条移动,保持位置不变的4种方法

div在顶部不变、滚动条滚动,div还是在顶部!



直接上传源码 了:

方法一:

[html] view plain copy

<!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>div浮层,滚动条移动,保持位置不变</title>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<style type="text/css">

body{background-image:url(about:blank);background-attachment:fixed;}

#float{width:344px;height:34px;border:1px solid #C0DBF8;position:absolute;top:0px;}

</style>

</head>

<body>

<div id="float" >ddd</div>

<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>

<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>

<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>

<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>

<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>

<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>

</body>

<script type="text/javascript">

var IO=document.getElementById('float'),Y=IO,H=0,IE6;

IE6=window.ActiveXObject&&!window.XMLHttpRequest;

while(Y){H+=Y.offsetTop;Y=Y.offsetParent};

if(IE6)

IO.style.cssText="position:absolute;top:(this.fix?(document.documentElement.scrollTop-(this.javascript||"+H+")):0)";

window.onscroll=function (){

var d=document,s=Math.max(d.documentElement.scrollTop,document.body.scrollTop);

if(s>H&&IO.fix||s<=H&&!IO.fix)return;

if(!IE6)IO.style.position=IO.fix?"":"fixed";

IO.fix=!IO.fix;

};

try{document.execCommand("BackgroundImageCache",false,true)}catch(e){};

</script>

</html>

方法二:

[html] view plain copy

<strong><body topmargin="0" bottommargin="0" leftmargin="0" rightmargin="0" style="overflow: hidden;">

<!-- div</strong>来实现<strong> -->

<div style="width: 100%; height: 100%; overflow: scroll;">

<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>

<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>

<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>

<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>

</div>

<div style="border: 1px red solid; width: 300px; height: 300px;margin:-150px 0 0 -150px; position: absolute; left: 50%; top: 50%;"></strong>

居中的层

<strong> </div>

</body></strong>

方法三:

[html] view plain copy

<body topmargin="0" bottommargin="0" leftmargin="0" rightmargin="0" style="overflow: hidden;">

<!-- iframe来实现 -->

<iframe src="http://www.csdn.net/" width="100%" height="100%" frameborder="0"></iframe>

<div style="border: 1px red solid; width: 300px; height: 300px;margin:-150px 0 0 -150px; position: absolute; left: 50%; top: 50%;">

居中的层

</div>

</body>

方法四:[采用css来居中]

[html] view plain copy

<style type="text/css">

<!--

html,body {height:100%; margin:0px; font-size:12px;}

.mydiv {

background-color: #f9fff6;

border: 1px solid #009900;

text-align: center;

line-height: 25px;

font-size: 13px;

font-weight: bold;

z-index:99;

width: 300px;

height: 50px;

left:50%;/*FF IE7*/

top:50%;/*FF IE7*/

margin-left:-150px!important;/*FF IE7 half of its width */

margin-top:-60px!important;/*FF IE7 half of its height*/

margin-top:0px;

position:fixed!important;/*FF IE7*/

position:absolute;/*IE6*/

_top: expression(eval(document.compatMode &&

document.compatMode=='CSS1Compat') ?

documentElement.scrollTop + (document.documentElement.clientHeight-this.offsetHeight)/2 :/*IE6*/

document.body.scrollTop + (document.body.clientHeight - this.clientHeight)/2);/*IE5 IE5.5*/

}

-->

</style>

<script language="javascript" type="text/javascript">

function showDiv(){

document.getElementById('popDiv').style.display='block';

}

window.onload=function(){

showDiv();

}

</script>

<!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>始终在中间DIV (支持IE FF)</title>

</head>

<body>

<div id="popDiv" class="mydiv" style="display:none;">始终在中间<br/>

</div>

<br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>

</body>

</html>
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