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自適應(yīng)加載的頁面高度</title>
</head>
<body>
<div><iframe src="child.htm"></iframe></div>
</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 自適應(yīng)其加載的網(wǎng)頁(多瀏覽器兼容)</title>
<script type="text/javascript">
<!--
function iframeAutoFit()
{
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;
a[i].parentNode.style.height = a[i].offsetHeight +"px";
a[i].style.height = "10px";
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 = a[i].parentNode.style.height = h +"px";
}
}
}
}
catch (ex){}
}
if(window.attachEvent)
{
window.attachEvent("onload", iframeAutoFit);
//window.attachEvent("onresize", iframeAutoFit);
}
else if(window.addEventListener)
{
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 自適應(yīng)其加載的網(wǎng)頁(多瀏覽器兼容，支持XHTML)</td>
</tr>
</table>
</body>
</html>
很多人反應(yīng)在IE7里使用它會死機(jī)，那是因?yàn)樵谧赃m應(yīng)高度時觸發(fā)了 window.onresize 事件，而這個事件又去調(diào)用這個調(diào)整 <iframe> 高度的函數(shù)，產(chǎn)生了死循環(huán)調(diào)用。