JS 控制自适应高度

1 <iframe src="需要连接的iframe地址" id="iframepage" name="iframepage" frameBorder=0 scrolling=no width="100%" onLoad="iFrameHeight()" ></iframe>

<script type="text/javascript" language="javascript"> 
function iFrameHeight() { 
var ifm= document.getElementById("iframepage"); 
var subWeb = document.frames ? document.frames["iframepage"].document : ifm.contentDocument; 
if(ifm != null && subWeb != null) {
ifm.height = subWeb.body.scrollHeight;
} 
} 
</script>