Question

asp中动态默认selected

<form name="form3" method="post" action="">
<tr><td align="right" width="20%" colspan="4" style="padding-top:2px;">
<select style="margin:-3px" name="go" onChange='window.location=form.go.options[form.go.selectedIndex].value'>
<option value="">选择显示方式</option>
<option value="admin_pic.asp?action=pic">显示所有图片</option>
<%sql="select * from piccat"
set rs2=server.createobject("adodb.recordset")
rs2.open sql,conn,1,1
do while not rs2.eof%>
<option value="admin_pic.asp?action=pic&piccat_id=<%=rs2("piccat_id")%>"><%=rs2("piccat_name")%></option>在这个代码下如何能动态默认selected就是选中菜单后显示选中项，不是默认项

Answer 1

先做一个函数：
function object_selected(current_value1,value1)
if current_value1=value1 then
sel_str="selected"
else
sel_str=""
end if
object_selected=sel_str
end function
之后：在用到默认的地方：
<option <%= object_selected(Server.HTMLEncode("参数1"),Server.HTMLEncode(Request("参数2")))%> >中山青旅</option>
参数1与参数2，代入用函数即可。

Answer 2

看看这样行不行：
<select name="select">
<option value="0" <% if 条件 then response.write "selected"%>>XXX</option>
<option value="1" <% if 条件 then response.write "selected"%>>>A</option>
<option value="2" <% if 条件 then response.write "selected"%>>>B</option>
<option value="3" <% if 条件 then response.write "selected"%>>>C</option>
</select>
可根据自己的情况修改。或者是传相对应的条件，在sql语句里加上where语句，看看怎么样

Answer 3

<td width="92%" class="table_trbg02">
<select name="years" id="years">
<%
for i=1949 to 2050
if year(date())=i then
response.Write "<option value="&i&" selected=""selected"" >"&i&"</option>"
else
response.Write "<option value="&i&">"&i&"</option>"
end if
next
%>
</select>年
<select name="moths" id="moths">
<% for i=1 to 12
if Month(date())=i then
response.Write "<option value="&i&" selected=""selected"" >"&i&"</option>"
else
response.Write "<option value="&i&">"&i&"</option>"
end if
next
%>
</select>月
<select name="dates" id="dates">
<% for i=1 to 31
if day(date())=i then
response.Write "<option value="&i&" selected=""selected"">"&i&"</option>"
else
response.Write "<option value="&i&">"&i&"</option>"
end if
next
%>
</select>日</td>