在使用IFrame的时候经常出现内容高度不符影响页面整体效果,利用JavaScript可以实现Iframe自适应其加载的内容高度.
//main.htm:
<html>
<head>
<meta http-equiv='Content-Type' content='text/html; charset=gb2312' />
<meta name='author' content='F.R.Huang(meizz梅花雪)//www.meizz.com' />
<title>iframe自适应加载的页面高度</title>
</head> 
<body>
<iframe src="child.htm"></iframe>
</body>
</html>
//child.htm:
<html>
<head>
<meta http-equiv='Content-Type' content='text/html; charset=gb2312' />
<meta name='author' content='F.R.Huang(meizz梅花雪)//www.meizz.com' />
<title>iframe 自适应其加载的网页(多浏览器兼容)</title> 
<script type="text/javascript">
<!--
function iframeAutoFit()

{
var ex;
try

{
if(window!=parent)

{
var a = parent.document.getElementsByTagName("IFRAME");
for(var i=0; i<a.length; i++) //author:meizz

{
if(a[i].contentWindow==window)

{
var h1=0, h2=0;
if(document.documentElement&&document.documentElement.scrollHeight)

{
h1=document.documentElement.scrollHeight;
}
if(document.body) h2=document.body.scrollHeight;
var h=Math.max(h1, h2);
if(document.all)
{h += 4;}
if(window.opera)
{h += 1;}
a[i].style.height = h +"px";
}
}
}
}
catch (ex)
{}
}
if(document.attachEvent)

{
window.attachEvent("onload", iframeAutoFit);
window.attachEvent("onresize", iframeAutoFit);
}
else

{
window.addEventListener('load', iframeAutoFit, false);
window.addEventListener('resize', iframeAutoFit, false);
}
//-->
</script>
</head>
<body>
<table border="1" width="200" style="height: 400px; background-color: yellow">
<tr>
<td>iframe 自适应其加载的网页(多浏览器兼容,支持XHTML)</td>
</tr>
</table>
</body>
</html>
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