Regular Expression to describe Credit Card expiry (valid thru) date

Question

I need a regular expression to validate credit card expiry date. Note that the format of the \"date\" is MM/YY where YY is the year without century and MM is the month (from

Answer 1

Revise the requirement on why you don't need a range for the year... because, 1. the regular expression you accepted as answer fails your acceptance criteria as "12/99900" 2. Even if you had a better regular expression, it's prone to be buggy and more maintenance work as expired date is allowed to be processed...

in general dynamic data whose limits are changing should not be validated using pattern matching -- unless the pattern changes as well