select 的 onchange 事件问题 在线等待

Question

自己顶个  希望大虾过来看看

Answer 1

二级联动
<form action="" method="post"  name="form1" >
<script>
<!--
<%
'二级数据保存到数组
Dim count1,cityRS,citySQL
set cityRS=server.createobject("adodb.recordset")
citySQL="select * from city order by shiorder" 
cityRS.open citySQL,conn,1,1
%>
var subval2 = new Array();
//数组结构：一级根值,二级根值,二级显示值
<%
count1 = 0
do while not cityRS.eof
%>
subval2[<%=count1%>] = new Array('<%=cityRS("Shengid")%>','<%=cityRS("id")%>','<%=cityRS("shiname")%>')
<%
count1 = count1 + 1
cityRS.movenext
loop
cityRS.close
%>
function changeselect1(locationid)
{
    document.form1.city.length = 0;
    document.form1.city.options[0] = new Option('请选择城市','');
    for (i=0; i<subval2.length; i++)
    {
        if (subval2[i][0] == locationid)
        {document.form1.city.options[document.form1.city.length] = new Option(subval2[i][2],subval2[i][1]);}
    }
}
//-->
        </script>
<select name="province" class="buttonmain" id="province" onChange="changeselect1(this.value)">
<option value="">请选择省份</option>
<%
dim provinceRS,provinceSQL
set provinceRS = server.createobject("adodb.recordset")
provinceSQL = "select * from province order by shengorder"
provinceRS.open provinceSQL,conn,1,1
do while not provinceRS.eof
  if provinceRS("id") = province then
     response.Write "<option value="&provinceRS("id")&" selected>"&provinceRS("shengname")&"</option>"
  else
     response.Write "<option value="&provinceRS("id")&">"&provinceRS("shengname")&"</option>"
  end if
  
provinceRS.movenext
loop
provinceRS.close
set provinceRS = nothing
%>
        </select>
          <select name="city" class="buttonmain" id="city">
  <option value="">请选择城市</option>
          </select> 
</form>

Answer 2

终于看到 大虾了 其实我 自己在网上也看到了相关的 就是因为 找了很久也找不到那个了 所以没办法 只能来求助了  先看看   先谢谢了