Permalink
Switch branches/tags
Nothing to show
Find file
Fetching contributors…
Cannot retrieve contributors at this time
18 lines (13 sloc) 842 Bytes
This was extracted from http://letsfreckle.com.
This version requires underscore.js. It was ported from the
version that uses the Prototype JavaScript framework.
CreditCard.validate('1111 2222 3333 4444') -> true/false
the given string is automatically stripped of whitespace, so it can be
plugged directly into form validations
The following things are tested:
1. does the luhn validation code add up? (see http://en.wikipedia.org/wiki/Luhn_algorithm)
2. does the number range and length seem right? (see http://en.wikipedia.org/wiki/Bank_card_number)
3. is it one of several well-known test numbers?
Card identification via CreditCard.type(string) -> "Visa", "MasterCard", etc.
Also, CreditCard.isVisa(string) -> true/false (works for all cards given in CARDS)
Be sure to adapt the CARDS array to the credit cards you accept.