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Basic Scripting

From Build 2.0.1.238, Iosphere 2 supports an 'If..Then..Else' command. This is of the following form:

Single-line If-Then-Else

If(arg1 compare arg2) Then (do_this) Else (do_this)

arg1, arg2 and do_this can either be a property (eg Document.Title) or a literal string, surrounded by double quotes ("").

compare can be either = (is equal to) or != (is not equal to).

For example:

%%If(Document.Title = "") Then ("[Untitled]") Else (Document.Title)%%

The above line will insert the title of the document if it has one, otherwise it will insert [Untitled].

Multi-line If-Then-Else

As of version 2.0.1.608, Iosphere supports a new, more powerful If-Then-Else statement. This functions more like other scripting languages. The example above can be re-written like:

%%
If(Document.Title = "") Then
    [Untitled]
Else
    Document.Title
End If
%%

This comes in useful when you only want to display information about an author if an author is actually set up:

%%If(Document.Author != "") Then%%
<p>By %%Document.Author%%
</p>
%%No Else%%
%%End If%%

Any pages which don't have the "Author" property set won't display "By [author]". Note: If you don't have an "Else" statement, you must include the words "No Else".