Extending the If Statement with Elseif

In its simple form the If statement is rather limiting, enabling us to perform one of two actions. One action if the condition is met and another action otherwise.

<%
If request.form("Activity") = "shopping" then
    ...
Else
    ...
End If 'request.form("Activity") = "shopping"
%>

Using the Elseif option we are able to implement a number of options.

<%
If request.form("Activity") = "shopping" then
    ...
Elseif request.form("Activity") = "swimming" then
    ...
Elseif request.form("Activity") = "gardening" then
    ...
Elseif request.form("Activity") = "cinema" then
    ...
Else
    ...
End If 'request.form("Activity") = "shopping"
%>

In the above example each test is performed in turn.  The first one where the criteria is met is the one which is then actioned.

Beware, when using the elseif statement. Depandant upon the form of the test care may be necessary in setting the tests out in the correct order.  For example if we are testing for the appearance of a word or phrase within a variable, It may be the case that both will qualify but the first one encountered will be the one actioned.

<%
activityString="flight"
if activityString="light" then
    ...
elseif activityString="flight" then
    ...
End if 'activityString
%>

Where one word is a subset of another it is usually better to put the test for the longer word first.