To create a user-defined function all you have to do is use the <cffunction> tag. For example:
<cffunction name="MakeCapitalised">
<cfargument name="wordToCapitalise" type="string">
<cfset FirstLetter = Left(wordToCapitalise,1)>
<cfset FirstLetter = UCase(FirstLetter)>
<cfset RestOfWord = Mid(wordToCapitalise, 2, Len(wordToCapitalise)-1)>
<cfreturn FirstLetter & RestOfWord>
</cffunction>
<cfoutput>
#MakeCapitalised("steven")#
</cfoutput>
The previous code will return the following:
Let's work through the code, we first define the function with a name of MakeCapitalised:
<cffunction name="MakeCapitalised">
Then we define the argument that it takes; in this case, we call it wordToCapitalise and say that it is of type string:
<cfargument name="wordToCapitalise" type="string">
Next, we get the first letter of the wordToCapitalise using the Left() function...