Custom field - append string to entered value

[plateaultd]

I have a string custom field that I would like to optionally append another string to at some point in the order process. This is to build a specific temporary domain name.

 

In the below logic: [ xxx ] is what the user enters.

e.g. [ user entry area for custom field called TemporaryDomain ]

 

Order Form Displays

Temporary Domain: [ EnteredValue ] .tempdomain.com (e.g. test.tempdomain.com)

 

I am using a regexp to validate EnteredValue for SomeString or SomeString.tempdomain.com

 

At some point in the order process

 

if ( TemporaryDomain == "EnteredValue") {

Set TemporaryDomain to "EnteredValue.tempdomain.com"

} else if ( TemporaryDomain == "EnteredValue.tempdomain.com") {

Do nothing

}

 

Any suggestions on how one might easily do this?

 

Thanks,

Roger