以下操作寫在body里面，form表單外

<iframe id="agentFrame" name="agentFrame" src="" width="0" height="0" style="display:none;" ></iframe>

<script type="text/javascript">

function sethash(){

hashH = document.documentElement.scrollHeight; //獲取自身高度

urlC = "/test.jsp"; //設置iframeA的src

document.getElementById("agentFrame").src=urlC+"#"+hashH; //將高度作為參數(shù)傳遞

}

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>

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