请skyan(樱庭) 进来查看答案，没有分。

wpmsoft 2002-11-26 03:35:15
见下面。
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skyan 2002-11-26
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非常感谢！！！！！！！！！！！！！！！！！！我去试了！
感谢！！！！！！！！！
response.write "Yeah!!!you have got 300 points!!!congratulations!!!And you are the god!!!My Christ,I will appreciation you in my life"
wpmsoft 2002-11-26
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全文如下：

<%
'谢谢你的帮助,以下是关于3级联动的代码，我现在正在为获取值而困惑，对你的帮助表示衷心的感谢！
'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%>
<%
Dim strLocationID,strDistrictID,strVillageID
strLocationID = Trim(Request.QueryString("id1"))
strDistrictID = Trim(Request.QueryString("id2"))
strVillageID = Trim(Request.QueryString("id3"))
%>
<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 "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)
{
//when change1 , then change2.
//select2 value=districtid name=districtname
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)
{
//when change2, then change3
//select3 value=villageidname=villagename

//find districtname form subcat where id=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">

<%if strLocationID = "" then%>
<option selected>请选择你所在的省份</option>
<%else%>
<option>请选择你所在的省份</option>
<%end if%>

<%

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

<%if Trim(rs1("locationid")) = strLocationID then %>
<option selected value="<%=trim(rs1("locationid"))%>"><%=trim(rs1("locationname"))%></option>
<%else%>
<option value="<%=trim(rs1("locationid"))%>"><%=trim(rs1("locationname"))%></option>
<%end if%>

<%
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)">

<%if strDistrictID = "" then%>
<option selected value="">==所有地区==</option>
<%else%>
<option value="">==所有地区==</option>
<script language=javascript>
var i;
for (i = 0; i< onecount; i++)
{
if (subcat[i][1] ==<%=strLocationID%>)
{
if (subcat[i][2] == <%=strDistrictID%>)
document.write("<option selected ");
else
document.write("<option ");
document.write("value="+subcat[i][2]+">"+subcat[i][0]+"</option>");
}
}
</script>
<%end if%>


</select><select name="village" size="1">

<%if strVillageID = "" then%>
<option selected>==所有县区==</option>
<%else%>
<option>==所有县区==</option>
<script language=javascript>
for (i = 0; i< onecount2; i++)
{
if (subcat2[i][1] ==<%=strDistrictID%>)
{
if (subcat2[i][2] == <%=strVillageID%>)
document.write("<option selected ");
else
document.write("<option ");
document.write("value="+subcat2[i][2]+">"+subcat2[i][0]+"</option>");
}
}
</script>
<%end if%>


</select>


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

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

</body>
</html>



—————————————————————————————————
　　　★ 与人玫瑰，手有余香
wpmsoft 2002-11-26
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<%if strVillageID = "" then%>
<option selected>==所有县区==</option>
<%else%>
<option>==所有县区==</option>
<script language=javascript>
for (i = 0; i< onecount2; i++)
{
if (subcat2[i][1] ==<%=strDistrictID%>)
{
if (subcat2[i][2] == <%=strVillageID%>)
document.write("<option selected ");
else
document.write("<option ");
document.write("value="+subcat2[i][2]+">"+subcat2[i][0]+"</option>");
}
}
</script>
<%end if%>

这是改变县区的修正版

<%if strDistrictID = "" then%>
<option selected value="">==所有地区==</option>
<%else%>
<option value="">==所有地区==</option>
<script language=javascript>
var i;
for (i = 0; i< onecount; i++)
{
if (subcat[i][1] ==<%=strLocationID%>)
{
if (subcat[i][2] == <%=strDistrictID%>)
document.write("<option selected ");
else
document.write("<option ");
document.write("value="+subcat[i][2]+">"+subcat[i][0]+"</option>");
}
}
</script>
<%end if%>

这是改变地区的修正版
meizz 2002-11-26
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我也写了一个例子:
<form name=form1>

<select name=sheng onchange="cityName(this.value)">
<option value="">请选择省名</option>
</select>

<select name=city>
<option value="">请选择城名</option>
</select>

</form>

<script language=javascript>
var cityouterHTML = document.form1.city.outerHTML.substr(0, document.form1.city.outerHTML.length-9);
function sheng()
{
var shengName = ["浙江", "江苏", "安徽", "江西"]; //这些数据可以从数据库中取得

var e = document.form1.sheng;
var s = e.outerHTML.substr(0, e.outerHTML.length-9) + "\r\n";
for (var i=0; i<shengName.length; i++){
s += "<option value='"+ shengName[i] +"'>"+ shengName[i] +"</option>\r\n";}
s += "</select>";
e.outerHTML = s;
} sheng();
function cityName(val)
{
var 浙江 = ["杭州", "宁波", "温州", "绍兴", "金华", "湖州"];
var 江苏 = ["南京", "苏州", "无锡", "常州", "镇江", "徐州"];
var 安徽 = ["合肥", "翕县", "黄山", "祁门", "休宁"];
var 江西 = ["南昌", "九江", "赣州", "上饶", "新余", "景德镇"];
//这些数据可以从数据库中取得

var e = document.form1.city;
var s = cityouterHTML;
if (val == "") {s += "</select>"; e.outerHTML = s; return;}
var a = eval(val);
for (var i=0; i<a.length; i++)
{
s += "<option value='"+ a[i] +"'>"+ a[i] +"</option>\r\n";
}
s += "</select>";
e.outerHTML = s;
}
</script>
wpmsoft 2002-11-26
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if strLocationID = "" then
strDistrictID=""
strVillageID=""
else if strDistrictID="" then
strVillageID=""
end if
end if
通过以上代码保证参数的正确性

—————————————————————————————————
　　　★ 与人玫瑰，手有余香 ★
wpmsoft 2002-11-26
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我没有实现数组过滤（即仅仅显示对应省的对应区的对应县，其实你的参数是有要求的，即不可以id1无值而id2有值。你可以添加代码以完善它。
以上仅是思路而已，在我的机器上通过测试，但代码有些冗余，请自行修正。
wpmsoft 2002-11-26
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<%
'谢谢你的帮助,以下是关于3级联动的代码，我现在正在为获取值而困惑，对你的帮助表示衷心的感谢！
'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%>
<%
Dim strLocationID,strDistrictID,strVillageID
strLocationID = Trim(Request.QueryString("id1"))
strDistrictID = Trim(Request.QueryString("id2"))
strVillageID = Trim(Request.QueryString("id3"))
%>
<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 "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)
{
//when change1 , then change2.
//select2 value=districtid name=districtname
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)
{
//when change2, then change3
//select3 value=villageid name=villagename

//find districtname form subcat where id=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">

<%if strLocationID = "" then%>
<option selected>请选择你所在的省份</option>
<%else%>
<option>请选择你所在的省份</option>
<%end if%>

<%

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

<%if Trim(rs1("locationid")) = strLocationID then %>
<option selected value="<%=trim(rs1("locationid"))%>"><%=trim(rs1("locationname"))%></option>
<%else%>
<option value="<%=trim(rs1("locationid"))%>"><%=trim(rs1("locationname"))%></option>
<%end if%>

<%
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)">

<%if strDistrictID = "" then%>
<option selected value="">==所有地区==</option>
<%else%>
<option value="">==所有地区==</option>
<script language=javascript>
var i;
for (i = 0; i< onecount; i++)
{
document.write("<option ");
if (subcat[i][2] == <%=strDistrictID%>)
document.write("selected ");
document.write("value="+subcat[i][2]+">"+subcat[i][0]+"</option>");
}
</script>
<%end if%>


</select><select name="village" size="1">

<%if strVillageID = "" then%>
<option selected>==所有县区==</option>
<%else%>
<option>==所有县区==</option>
<script language=javascript>
for (i = 0; i< onecount2; i++)
{
document.write("<option ");
if (subcat2[i][2] == <%=strVillageID%>)
document.write("selected ");
document.write("value="+subcat2[i][2]+">"+subcat2[i][0]+"</option>");
}
</script>
<%end if%>


</select>


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

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

</body>
</html>

CSDN BLOG惊现BUG！！
今天发了篇文章： http://blog.csdn.net/hongbo781202/archive /2004/07/14/41394.aspx 结果发现了CSDN BLOG的BUG： http://blog.csdn.net/skyan/archive/2004/07 /14/41453.aspx  
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