jquery页面：
<script src="jquery.min.js"></script>
<script>
$(function(){
$("#typeid").change(function(){
$.get("select_1.asp",{typeid:$(this).val()},
function(data){
data=eval("("+data+")");
var mydata="";
for( var i=0;i<data.length;i++){
mydata+="<option value='"+data[i].deatilid+"'>"+data[i].detailname+"</option>"}
$("#detailid").html(mydata)
$("#rr").html(data.length)
})
});
$("#typeid").change()
});
</script>
<%
response.Charset="gb2312"
sql="SELECT * FROM newsType"
set rs=conn.execute(sql)
%>
<select name="select" id="typeid">
<%do while not rs.eof%>
<option value="<%= rs("typeid") %>"><%= rs("typename") %></option>
<%
rs.movenext
loop
%>
</select>
<select name="select" id="detailid">
</select>
数据页面：
<!--#include file="conn.asp" -->
<%
response.Charset="gb2312"
sql="SELECT * FROM detailType where typeid="&request.querystring("typeid")
'sql="SELECT * FROM detailType"
set rs=conn.execute(sql)
json_text="["
do while not rs.eof and not rs.bof
json_text=json_text+"{'detailid':"&rs("detailid")&",'detailname':'"&rs("detailname")&"'}"
rs.movenext
if not rs.eof then json_text=json_text&","
loop
rs.close
json_text=json_text+"]"
response.write json_text
%>
