Regular Expression To Match Credit Card CVV Number

The following RegEx pattern is a quick regular expression to match and validate the Credit Card’s CVV numbers. These numbers are 3 or 4 digits found on the back of your credit cards and they ensure that you are the true owner of a card.

/^[0-9]{3,4}$/

Matches:

  • 123
  • 456
  • 1234

Non-matches:

  • 12
  • abc
  • 123b

See Also: