三级下拉框连动的数据库版

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核心提示：'三级下拉框连动''数据库：'location'表1 loaction所在地表' 字段' loactionid' loactionname 名字'表2 district所在的地区表' 字段' locationid 'dist

'三级下拉框连动
'
'数据库：
'location
'表1 loaction　所在地表
'　字段
'　 loactionid
'　 loactionname 名字
'表2 district　所在的地区表
'　字段
'　 locationid
'　　districtid
'　　districtname
'表3 village　所在的县区表
'　字段
'　 districtid
'　 villageid
'　 villagename

<%Option Explicit%>
<html>
<head>
<title>List</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<%
dim conn
dim rs
dim sql
dim count
dim rs1
dim sql1
dim rs2
dim sql2
dim count2

set conn=server.createobject("adodb.connection")
conn.open"PRovider=sqloledb;data source=192.168.0.33;uid=sa;pwd=;database=location;"

sql = "select * from district order by locationid asc"
set rs = conn.execute(sql)
%>
<script language = "javaScript">
var onecount;
onecount=0;
subcat = new Array();
<%
count = 0
do while not rs.eof
%>
subcat[<%=count%>] = new Array("<%= trim(rs("districtname"))%>","<%= trim(rs("locationid"))%>","<%= trim(rs("districtid"))%>");
<%
count = count + 1
rs.movenext
loop
rs.close
set rs=nothing
%>
onecount=<%=count%>;

function changelocation(locationid)
{
document.myform.smalllocation.length = 0;

var locationid=locationid;
var i;
document.myform.smalllocation.options[0] = new Option('==所选城市的地区==','');
for (i=0;i < onecount; i++)
{
if (subcat[i][1] == locationid)
{
document.myform.smalllocation.options[document.myform.smalllocation.length] = new Option(subcat[i][0], subcat[i][2]);
}
}

}
</script>

<%sql2 = "select * from village order by districtid asc"
set rs2 = conn.execute(sql2)
%>
<script language = "Javascript">
var onecount2;
onecount2=0;
subcat2 = new Array();
<%
count2 = 0
do while not rs2.eof
%>
subcat2[<%=count2%>] = new Array("<%= trim(rs2("villagename"))%>","<%= trim(rs2("districtid"))%>","<%= trim(rs2("villageid"))%>");
<%
count2 = count2 + 1
rs2.movenext
loop
rs2.close
set rs2=nothing
%>
onecount2=<%=count2%>;

function changelocation2(villageid)
{
document.myform.village.length = 0;

var villageid=villageid;
var j;
document.myform.village.options[0] = new Option('==所选地区的县区==','');
for (j=0;j < onecount2; j++)
{
if (subcat2[j][1] == villageid)
{
document.myform.village.options[document.myform.village.length] = new Option(subcat2[j][0], subcat2[j][2]);
}
}

}
</script>

</head>
<body>
<form name="myform" method="post">
题目：<input type="text" name="T2" size="20">

来源：<input type="text" name="T3" size="20">

分类：<select name="biglocation" onChange="changelocation(document.myform.biglocation.options[document.myform.biglocation.selectedIndex].value)" size="1">
<option selected>请选择你所在的省份</option>
<%

sql1 = "select * from location order by locationname asc"
set rs1 = conn.Execute (sql1)
do while not rs1.eof
%>
<option value="<%=trim(rs1("locationid"))%>"><%=trim(rs1("locationname"))%></option>

<%
rs1.movenext
loop
rs1.close
set rs1 = nothing
conn.Close
set conn = nothing
%>
</select><select name="smalllocation" onChange="changelocation2(document.myform.smalllocation.options[document.myform.smalllocation.selectedIndex].value)">
<option selected value="">==所有地区==</option>
</select><select name="village" size="1">
<option selected>==所有县区==</option>
</select>

关键词：<input type="text" name="T4" size="20">

内容：<textarea rows="9" name="S1" cols="51"></textarea>
</form>

</body>
</html>