有简单方法实现3级联动下拉框选择刷新数据而不刷新页面不？
可以只通过修改代码实现下拉框选择刷新数据而不刷新页面不？
<select name="type" onChange="form1.submit()">
<option value="0"<%if nowtype="0" then%> selected="selected"<%end if%>>THDS</option>
<option value="1"<%if nowtype="1" then%> selected="selected"<%end if%>>TFDS</option>
<option value="2"<%if nowtype="2" then%> selected="selected"<%end if%>>TPDS</option>
<option value="3"<%if nowtype="3" then%> selected="selected"<%end if%>>TADS</option>
<option value="4"<%if nowtype="4" then%> selected="selected"<%end if%>>AEI</option>
<option value="5"<%if nowtype="5" then%> selected="selected"<%end if%>>HMIS</option>
<option value="6"<%if nowtype="6" then%> selected="selected"<%end if%>>电动脱轨器</option>
<option value="7"<%if nowtype="7" then%> selected="selected"<%end if%>>手持机</option>
<option value="8"<%if nowtype="8" then%> selected="selected"<%end if%>>智能风表</option>
<option value="9"<%if nowtype="9" then%> selected="selected"<%end if%>>办公网络</option>
</select></td>
</tr>
</form>
<form name="form2">
<input type="hidden" name="type" value="<%=nowtype%>">
<tr>
<td align="right" height="30">故障所属大类：</td>
<td class="category">
<%
sql="select * from money_bigclass where type="&nowtype&" order by id"
set rs_bigclass=conn.execute(sql)
if rs_bigclass.eof then
%>
<script language="javascript">
alert("请先添加帐务大类！")
window.location.href="../money/bigclass_add.asp"
</script>
<%
response.end
end if
nowbigclass=request("bigclass")
if nowbigclass="" then
nowbigclass=rs_bigclass("id")
end if
%>
<select name="bigclass" onChange="form2.submit()">
<%
do while rs_bigclass.eof=false
%>
<option value="<%=rs_bigclass("id")%>"<%if trim(cstr(rs_bigclass("id")))=nowbigclass then%> selected="selected"<%end if%>><%=rs_bigclass("bigclass")%></option>
<%
rs_bigclass.movenext
loop
%>
