zoukankan
html css js c++ java
三级联动菜单 PENGHAO
<!--
#include file
=
"
conn.asp
"
-->
<%
dim bid,cid
bid
=
request(
"
bid
"
) 'bid 大类id
cid
=
request(
"
cid
"
) 'cid 中类id
'
if
bid
=
""
then
'bid
=
"
1
"
'end
if
'
if
cid
=
""
then
'cid
=
"
1
"
'end
if
set rs
=
server.createobject(
"
adodb.recordset
"
)
sql
=
"
select * from btype
"
'表一 大类表
rs.open sql,conn,
1
,
3
strOption1
=
"
<option value='' selected style='BACKGROUND-COLOR: #eeeeee; COLOR: #ff0000'>==请选择==</option>
"
do
while
not rs.eof
if
cstr(rs(
"
id
"
))
=
cstr(bid) then
strOption1
=
strOption1
&
"
<option value='
"
&
rs(
"
id
"
)
&
"
' selected>
"
&
rs(
"
type
"
)
&
"
</option>
"
else
strOption1
=
strOption1
&
"
<option value='
"
&
rs(
"
id
"
)
&
"
'>
"
&
rs(
"
type
"
)
&
"
</option>
"
end
if
rs.movenext
loop
rs.close
if
bid
<>
""
then
sql
=
"
select * from mtype where bid=
"
&
bid '表二 中类表 bid
==
表一中的id
rs.open sql,conn,
1
,
3
strOption2
=
"
<option value='' selected style='BACKGROUND-COLOR: #eeeeee; COLOR: #ff0000'>==请选择==</option>
"
do
while
not rs.eof
if
cstr(rs(
"
id
"
))
=
cstr(cid) then
strOption2
=
strOption2
&
"
<option value='
"
&
rs(
"
id
"
)
&
"
' selected>
"
&
rs(
"
type
"
)
&
"
</option>
"
else
strOption2
=
strOption2
&
"
<option value='
"
&
rs(
"
id
"
)
&
"
'>
"
&
rs(
"
type
"
)
&
"
</option>
"
end
if
rs.movenext
loop
rs.close
end
if
if
cid
<>
""
then
sql
=
"
select * from stype where mid=
"
&
cid '表三 小类表 mid
==
表二的id
rs.open sql,conn,
1
,
3
strOption3
=
"
<option value='' selected style='BACKGROUND-COLOR: #eeeeee; COLOR: #ff0000'>==请选择==</option>
"
while
not rs.eof
if
cstr(rs(
"
id
"
))
=
cstr(cid) then
strOption3
=
strOption3
&
"
<option value='
"
&
rs(
"
id
"
)
&
"
' selected>
"
&
rs(
"
type
"
)
&
"
</option>
"
else
strOption3
=
strOption3
&
"
<option value='
"
&
rs(
"
id
"
)
&
"
'>
"
&
rs(
"
type
"
)
&
"
</option>
"
end
if
'strOption3
=
strOption3
&
"
<option value='
"
&
rs(
"
id
"
)
&
"
'>
"
&
rs(
"
type
"
)
&
"
</option>
"
rs.movenext
wend
rs.close
end
if
%>
<
select onchange
=
"
changeb(this.value)
"
name
=
"
bid
"
><%=
strOption1
%></
select
>
<
select onchange
=
"
change(this.value)
"
name
=
"
cid
"
><%=
strOption2
%></
select
>
<
select name
=
"
typeid
"
><%=
strOption3
%></
select
>
<
script language
=
"
javascript
"
>
<!--
function
changeb(bid){
location.assign(
"
three.asp?bid=
"
+
bid);
}
function
change(cid){
location.assign(
"
three.asp?bid=<%=bid%>&cid=
"
+
cid);
}
-->
</
script
>
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原文地址:https://www.cnblogs.com/Dove/p/118248.html
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