javascript:如何在下页取得FORM表单的值？

[java1232]

具体内容如下：
a.jsp
<form type="post" action="b.jsp">
<input name="aa" type="hidden">
</form>

b.jsp
<script type="text/javascript">
如何得到aa的值？
</script>

[rjzou2006]

request.form("表单值");

[everest_wf]

request.getParameter("aa");

[everest_wf]

<%
String aaaaa=request.getParameter("aa");

%>

<script>
var sss ="<%=aaaaa%>";//var sss = "<%=request.getParameter("aa")%>";
</script>

[AHUA1001]

首先要a提交到b里。
<%
String aa=request.getParameter("aa");
%>

<script>
var sss ="<%=aa%>";
</script>

[java1232]

<%
String aa=request.getParameter("aa");
%>

<script>
var sss ="<%=aa%>";
</script>

为什么总是提示语法错误？

[夜的眼2021]

<%
a=request("a");

%>

<script>
var s ="<%=a%>";
</script>

[ningxuan17]

具体内容如下：
a.jsp
<form type="post" action="b.jsp">
<input name="aa" type="hidden">
</form>

b.jsp
<script type="text/javascript">
如何得到aa的值？
var a=Request("aa")
Response.Write("a")
</script>