Create unique Form ID - Help on Date Format in Concat

Question

I am having problems formating a date value in my concat statement.  I have tried to write is different ways and still can't seem to get the string correct.
Ideally, I would like to change the date value to a Julian value for the form ID, but I would settle for just mmddyy value without the / or - in between.
Codes I have tried w/out date format string
JavaScript - Calculate
Program.FormID.rawValue=Program.State.rawValue + Program.ProgramNumber.rawValue + Program.ProgramDate.formattedValue;
Returns - MO1234Jul8,2010  
-------------And--------------------
Program.FormID.rawValue=Program.State.rawValue + Program.ProgramNumber.rawValue + Program.ProgramDate.rawValue;
Returns - MO12342010-07-08
FormCalc - Calculate 
(This one has the current date as a value, but it changes the unique form ID when reopened on another day, that is why I am using ProgramDate)
Concat(Date2Num(Date(), "ddmmyyy"),Program.State.rawValue, Program.ProgramNumber.rawValue)
Returns - 0MO1234
----------- And --------------------
if 
(Program.ProgramNumber.rawValue ne null) then
$.rawValue
= CONCAT(Program.State.rawValue, Program.ProgramNumber.rawValue, Program.ProgramDate.formattedValue)
else
$.rawValue = ""
endif 
Returns - MO1234July8,2010  (formattedValue)
              MO12342010-07-08 (rawValue)
What would be the better  language to use, FormCalc or JavaScript for this example?
I am not all that skilled at coding and use forums like this to help me, so I appreciate any help.
Thanks in advance - Eve

Answer 1

Date.prototype.yyyymmdd = function() {
   var yyyy = this.getFullYear().toString();
   var mm = (this.getMonth()+1).toString(); // getMonth() is zero-based
   var dd  = this.getDate().toString();
   return yyyy + (mm[1]?mm:"0"+mm[0]) + (dd[1]?dd:"0"+dd[0]); // padding
Now, after having spliced the internal Date object, you can do this:
d = new Date();
d.yyyymmdd();
The line above returns today's date: "20100709".