无限极分类例子
作者:parno 日期:2006-09-16
比较简单的一个页面,类似csdn论坛在ns下的左边列表。
描述:
1. 数据名:tree.mdb;表名:tree
表结构:id(自编) pid(数字) content(文本) link(文本)
2. 图片:endnode.gif collapsed.gif back.gif(均在img目录下,可自行修改)
3. 代码:
无限级列表
<%
newid=Request.QueryString("id")
if newid="" or CInt(newid)<0 then newid=0
if isNumeric(newid) then
listTree(CInt(newid))
end if
function listTree(id)
dim rs
dim imgFolder,imgFile
dim link,href,parentHref
dim target,ahref,click
target="main" ’所指定的框架名
imgFolder="img/" ’默认路径
set rs=conn.execute("select *,(select count(*) from tree where pid = T.id) as children,(select pid from tree where id="&id&") as parent from tree T where pid="&id)
if not rs.eof then
parentHref=Request.ServerVariables("URL")&"?id="&rs("parent")
if id<>0 then Response.Write ""&VbCrLf
do while not rs.eof
if rs("children")>0 then
img=imgFolder+"collapsed.gif"
href=Request.ServerVariables("URL")&"?id="&rs("id")
click="onclick=""location.href=’"&href&"’"""
else
img=imgFolder+"endnode.gif"
href="javascript:void(0)"
end if
if not isNull(rs("link")) then
ahref=rs("link")
else
ahref="javascript:void(0)"
target="_self"
end if
link=""&rs("content")&""
Response.Write ""
rs.movenext
loop
rs.close:set rs=nothing
end if
end function
conn.close:set conn=nothing
%>
conn.inc:
4.测试:ie6,ns7,mozilla下测试通过
描述:
1. 数据名:tree.mdb;表名:tree
表结构:id(自编) pid(数字) content(文本) link(文本)
2. 图片:endnode.gif collapsed.gif back.gif(均在img目录下,可自行修改)
3. 代码:
复制内容到剪贴板 程序代码
<%
newid=Request.QueryString("id")
if newid="" or CInt(newid)<0 then newid=0
if isNumeric(newid) then
listTree(CInt(newid))
end if
function listTree(id)
dim rs
dim imgFolder,imgFile
dim link,href,parentHref
dim target,ahref,click
target="main" ’所指定的框架名
imgFolder="img/" ’默认路径
set rs=conn.execute("select *,(select count(*) from tree where pid = T.id) as children,(select pid from tree where id="&id&") as parent from tree T where pid="&id)
if not rs.eof then
parentHref=Request.ServerVariables("URL")&"?id="&rs("parent")
if id<>0 then Response.Write ""&VbCrLf
do while not rs.eof
if rs("children")>0 then
img=imgFolder+"collapsed.gif"
href=Request.ServerVariables("URL")&"?id="&rs("id")
click="onclick=""location.href=’"&href&"’"""
else
img=imgFolder+"endnode.gif"
href="javascript:void(0)"
end if
if not isNull(rs("link")) then
ahref=rs("link")
else
ahref="javascript:void(0)"
target="_self"
end if
link=""&rs("content")&""
Response.Write ""
rs.movenext
loop
rs.close:set rs=nothing
end if
end function
conn.close:set conn=nothing
%>
conn.inc:
复制内容到剪贴板 程序代码
<%
dim conn
set conn = Server.CreateObject("ADODB.Connection")
conn.Open "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Server.mappath("tree.mdb") & ";Persist Security Info=False"
%>
dim conn
set conn = Server.CreateObject("ADODB.Connection")
conn.Open "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Server.mappath("tree.mdb") & ";Persist Security Info=False"
%>
4.测试:ie6,ns7,mozilla下测试通过
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