⼆级下拉菜单关联(数据库版)的简单⽅法
html下拉菜单的制作方法<!--#include file="public/connstr.asp"-->
<%
'Option Explicit
'数据库结构和上次发表的同样
'⼆级下拉框连动
'
'数据库:
'location
'表1 loaction 所在地表
' 字段
' loactionid (主键)
' loactionname 名字
'表2 district 所在的地区表
' 字段
' locationid (主键)
' districtid
' districtname
%>
<html>
<head>
<title>List</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<%
dim rs
dim sql
dim count
dim rs1
dim sql1
dim rs2
dim sql2
dim count2
sql = "select * from district order by locationid asc"
set rs = ute(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
loop
rs.close
set rs=nothing
%>
onecount=<%=count%>;
function changelocation(locationid)
{
var locationid=locationid;
var i;
for (i=0;i < onecount; i++)
{
if (subcat[i][1] == locationid)
{
}
}
}
</script>
</head>
<body>
<form name="myform" method="post">
题⽬:<input type="text" name="T2" size="20"><br>
来源:<input type="text" name="T3" size="20"><br>
分类:<select name="biglocation"
onChange="form.biglocation.form.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 f
%>
<option value="<%=trim(rs1("locationid"))%>"><%=trim(rs1("locationname"))%></option>
<%
loop
rs1.close
set rs1 = nothing
conn.Close
set conn = nothing
%>
</select>
<select name="smalllocation">
<option selected value="">==所有地区==</option>
</select>
<br>
关键词:<input type="text" name="T4" size="20"><br>
内容:<textarea rows="9" name="S1" cols="51"></textarea> </form>
</body>
</html>
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