Question

------------ASP二级联动出错---------------

<%
fl_id = Request("fl_id")

%>
<SCRIPT LANGUAGE="javascript">

function chang_product_type(){ location.href="44.asp?fl_id="+document.form1.fl_id.options[document.form1.fl_id.selectedIndex].value;
}
</SCRIPT>
<form name="form1" method="post" action="">

<td width="19%" height="10" align="right"> 选择一级分类: </td>
<td bordercolor="#cccccc" bordercolordark="#FFFFFF" class="p9">
<%
set myrs_root=server.CreateObject("adodb.recordset")
myrs_root.Open "select * from yjfl where fl_fj=0 order by fl_id",conn,1,1
if myrs_root.RecordCount>0 then
if fl_id="" then fl_id=myrs_root("fl_id")
%>
<select name="fl_id" style="WIDTH: 260px; COLOR: navy; font-size:9pt" onChange="javascript:chang_product_type();">
<%
do until myrs_root.EOF
Response.Write "<option value=" & myrs_root("fl_id") & " " & object_selected(fl_id,cstr(myrs_root("fl_fj"))) & " style='color:black;background:#f0f0f0'>⊙" & myrs_root("fl_mz") & "</option>"
myrs_root.MoveNext
loop
%>
</select> </td>
</tr>
<tr bgcolor="#FFFFFF">
<td height="10" align="right">选择二级分类:</td>
<td bordercolor="#cccccc" bordercolordark="#FFFFFF" class="p9">
<select name="fl_fj" style="WIDTH: 260px; COLOR: navy; font-size:9pt">
<%set myrs_child=server.CreateObject("adodb.recordset")
sql="select * from yjfl where fl_fj=" & fl_id & " order by fl_id"
myrs_child.Open sql,conn,1,1
do until myrs_child.EOF
Response.Write "<option value='" & myrs_child("fl_fj") & "'" & object_selected(fl_fj,cstr(myrs_child("fl_id"))) & " >┠—" & myrs_child("fl_mz") & "</option>"
myrs_child.MoveNext
loop
myrs_child.Close
set myrs_child=nothing

%>
</select> </td>
</tr>
<%
end if
myrs_root.Close
set myrs_root=nothing
%>

</form>

以上代码，显示都正常，就是在一级类选择的时候，老是返回，效果就和刷新一样，但二级能接受的到，
如果厉害就不用我多说了吧，
代码不保证没问题。

Answer 1

你这样的做法本来就是会自我刷新的

除非你一次把二级全部select 出来
或者你用ajax