*******************************************************《方法一》****************************************************
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 language=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 h = document.body.scrollHeight;
if(document.all) {h += 4;}
if(window.opera) {h += 1;}
a[i].style.height = h;
}
}
}
}
catch (ex)
{
alert("脚本无法跨域操作！");
}
}
if(document.attachEvent) window.attachEvent("onload", iframeAutoFit);
else window.addEventListener('load', iframeAutoFit, false);
</script>
</head>
<body>
<div style="width: 200; height: 400; background-color: yellow">
iframe 自适应其加载的网页(多浏览器兼容)
</div>
</body>
</html>
*******************************************************《方法二》****************************************************
parent.document.all("comment").style.height=document.body.scrollHeight+10;
parent.document.all("comment").style.width=document.body.scrollWidth-10;
把以上代码存为iframe.js
假如a.htm里iframe一个b.htm
那么在b.htm里这样引用iframe.js
<script src="iframe.js"></script>
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http://www.yongfa365.com/item/c2841f7968418f92.html