三级下拉框连动的数据库版

程序员文章站 2022-08-11 13:29:37

三级下拉框连动：location表1 loaction 所在地表字段 loactioni...

三级下拉框连动

：
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">

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三级下拉框连动的数据库版

三级下拉框连动的数据库版

下拉框连动的小例子（.htm版）

下拉框连动的小例子（数据库版）

下拉框连动的小例子（.htm版）

三级下拉框连动的数据库版