try
-------------------------------------------
<script language="javascript">
function confirmUpdate(obj){
var row=obj.parentElement.parentElement;
var text1=row.cell[0].firstChild.value;
var text2=row.cell[1].firstChild.value;
alert("text1=" + text1 + "text2=" + text2);
}
</script>
-------------------------------------------
<script language="javascript">
function confirmUpdate(obj){
var row=obj.parentElement.parentElement;
var text1=row.cell[0].firstChild.value;
var text2=row.cell[1].firstChild.value;
alert("text1=" + text1 + "text2=" + text2);
}
</script>
-------------------------------------------------
<table>
<logic:iterate id="elem" name="paraList">
<tr>
<td><html:text name="elem" property="name" /></td>
<td><html:text name="elem" property="paraValue" /></td>
<td><input type="button" value="保存修改" onclick="confirmUpdate(this)" ></td>
</tr>
</logic:iterate>
</table><script language="javascript">
function confirmUpdate(obj){
var row=obj.parentElement.parentElement;
var text1=row.cells[0].firstChild.value;
var text2=row.cells[1].firstChild.value;
alert("text1=" + text1 + "text2=" + text2);
}
</script>