if page is default then include if not default then

问题

I've read similar questions, but none seems working for me.

I have an asp site, i think classic (don't even know difference between classic and net), with few pages all with asp extension, and some html includes, one of these being a slider which I want to only display when in homepage (default.asp), and if not default then add a div to the markup.

I know the following is wrong, but just to better explain my need.

<%
if page == default.asp
include file="slider.html"
if page != default.asp
<div class="spacer-top"></div>
%>

回答1:

Like many of your predecessors in ASP-classic-land, what you're wanting is conditional includes, and the problem you're bumping into is that classic ASP doesn't do conditional includes. (The reason why is that the #include directive is handled long before any script on the page is parsed.)

There are various workarounds involving Execute or other dangerous-in-the-wrong-hands commands; search for "asp conditional include" and you'll find more than you were bargaining for. However, in your case, it might be simpler to encase the slider display in a subroutine that you can call or not.

Slider.html:

<%
Sub DisplaySlider()
    'code to display the slider (probably JavaScript, I'm guessing?)
    %>
    <script ...>
    </script>
    <%
End Sub
%>

Other pages:

<!-- #include virtual="/slider.html" -->
<%
scriptname = Request.ServerVariables("Script_Name")
If InStr(scriptname, "default.asp") > 0 Then
    DisplaySlider
Else
    Response.Write "<div class='spacer-top'></div>"
End If
%>

回答2:

Martha is bang on the nail.

To augment her answer I feel I should point out that system design comes into play, here. Try keeping your modules small and succinct, targeting their functionality to a particular aspect of your application's requirements. For example:

one to deal with your data layer
one to deal with more advanced form handling
one to deal with blah

You get the idea.

Another idea is to include common functions in your global.asa so they're available to all modules within your application instantly.

来源：https://stackoverflow.com/questions/35610851/if-page-is-default-then-include-if-not-default-then

标签

html

vbscript

asp-classic

ssi