Time format hours ("hh24") delim (.or,) (1/4) hour values as decimal value

Question

Dear all,
What I need is a client (browser) site validation of values for a time recording system. The format should be as
<hh24><Delimiter>(.(or),) 1/4 hours as decimal value (e.g. 15 minutes = 0.25). So as a result valid entrys should be. 00.00 as min., 24.00 as max.
The "minutes"-part should only except full 1/4 hour values: 00, 25, 50, 75 or blank.
More valid variation could be:
.75 (45 minutes) should be considered as 00.75.
1.25 , 9 ( = 9 hours)
A colleague helped me and created the regexp pattern.
(?<=\A)(([01]?[0-9]|2[0-4])[\.,]?)?([\.,](0{1,2}|25|50|75))?(?=(\z))
It works perfect in "The Regex Coach", but sadly it does not work in a java script.
My hope is, that someon already has a solution for this or a similar task.
If so, please let me know and give me a hint.
Thank you very much in advance.
and best regards.
Andre

Answer 1

Hi Ben,
thank you for your response.
since I not only want to ask for help, I will let you konw our solution. It has been a little mind twisting
However, Just in case someone is interestet in...
function xaChk_TimeDecimalFormat(pItem)
   var check = $v(pItem);
   var regexpval = "^((([01]?[0-9])|(2[0-4]))?([,\.](00?))?|(([01]?[0-9])|(2[0-3]))?([,\.](00|25|50|5|75))?)$";
   if (check.search(regexpval,"g") < 0)
   {alert ('Ungültiges Zeiterfassungs-Format. \n gültig Werte sind: \n max. 24h und nur volle 1/4 Stunden als Decimalwert z.B. 0.25 für 15 Min.') };
function xaChk_TimeClockFormat(pItem)
   var check = $v(pItem);
   var regexpval = "^((([01]?[0-9])|(2[0-4]))?([,\.](00))?|(([01]?[0-9])|(2[0-3]))?([,\.](00|15|30|45))?)$";
   if (check.search(regexpval,"g") < 0)
   {alert ('Ungültiges Zeiterfassungs-Format. \n gültig Werte sind: \n max. 24h und nur volle 1/4 Stunden als Minuten z.B. 0.15.') };
;Thanks again to all how wasted any thought on this. :-)
Best Regards
Andre