Regex to match master/visa card with spaces in Javascript

Question

I am looking to write a Regex in javascript which match only master/visa card with spaces as below:

5555 5555 5555 4444 (Valid input master card)
4111 1111 1111 1111  (Valid input visa card) 
3782 8224 6310 005   (Invalid input AMEX)

I have wrote a custom validator in javascript which validates against the following Regex:

regexp: {
              regexp: /^(?:4[0-9]d{12}(?:[0-9]d{3})?|(?:5[1-5][0-9]{2}|222[1-9]|22[3-9][0-9]|2[3-6][0-9]{2}|27[01][0-9]|2720)[0-9]{d12})$/,
              message: "Only visa and master cards are allowed"
            }

The event is fires which uses the above regex and displays the message based on user input. Few examples of user input below:

Credit Card     Sample Number                Output
Visa            4111 1111 1111 1111          Match
MasterCard       5500 0000 0000 0004         Match
American Express    3400 0000 0000 009       Invalid
Diner's Club      3000 0000 0000 04          Invalid 
Carte Blanche    3000 0000 0000 04           Invalid
Discover          6011 0000 0000 0004        Invalid
en Route          2014 0000 0000 009         Invalid
JCB               3088 0000 0000 0009        Invalid

Can you explain the logic you're trying to implement in words? — CertainPerformance, Jul 05 '19 at 04:12
I am trying to validate if the card is a master or visa card. The input has got spaces after every four numbers of the card. I want to write a regex which validates the card number. — Arun Kumar, Jul 05 '19 at 04:29
Alright I need a regular expression that can match the credit card number if they are either master or visa. The input will have spaces in between them. — Arun Kumar, Jul 05 '19 at 04:42
If you need more logic than that, you'll have to *describe* the sort of logic you're trying to implement — CertainPerformance, Jul 05 '19 at 04:42
@CertainPerformance I have updated my question with more information. Hopefully it make sense now. — Arun Kumar, Jul 05 '19 at 04:49

score 0 · Answer 1 · answered Jul 05 '19 at 04:29

0

Here you go...

^(?:4[0-9]{12}(?:[0-9]{3})?          # Visa
 |  (?:5[1-5][0-9]{2}                # MasterCard
     | 222[1-9]|22[3-9][0-9]|2[3-6][0-9]{2}|27[01][0-9]|2720)[0-9]{12}
 |  3[47][0-9]{13}                   # American Express
 |  3(?:0[0-5]|[68][0-9])[0-9]{11}   # Diners Club
 |  6(?:011|5[0-9]{2})[0-9]{12}      # Discover
 |  (?:2131|1800|35\d{3})\d{11}      # JCB
)$

source: https://www.regular-expressions.info/creditcard.html

answered Jul 05 '19 at 04:29

Scott Speidel

21
2

is it going to take care of the spaces? – Arun Kumar Jul 05 '19 at 04:30
https://stackoverflow.com/questions/9315647/regex-credit-card-number-tests – Scott Speidel Jul 05 '19 at 04:52

Regex to match master/visa card with spaces in Javascript

1 Answers1