<iframe>标签自适应高度和宽度

引用

<iframe src="index.html" id="iframepage" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" 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;
   ifm.width = subWeb.body.scrollWidth;
}   
}   
</script>

https://www.cnblogs.com/Nbge/archive/2013/06/14/3135697.html