以下操作写在body里面，form表单外

<iframe id="agentFrame" name="agentFrame" src="" width="0" height="0" ></iframe> <script type="text/javascript"> function sethash(){ hashH = document.documentElement.scrollHeight; //获取自身高度 urlC = "/test.jsp"; //设置iframeA的src document.getElementById("agentFrame").src=urlC+"#"+hashH; //将高度作为参数传递 } window.onload=sethash; </script>

test.jsp如下：

<%@ page contentType="text/html;charset=GBK" language="java"%> <script> function pseth() { var iObj = parent.parent.document.getElementById('infoFrame'); iObjH = parent.parent.frames["infoFrame"].frames["agentFrame"].location.hash; iObj.style.height = iObjH.split("#")[1]+"px"; } window.onload=pseth(); </script>