Bin e padrões para validação de cartão de crédito.
| Bandeira | Começa com | Máximo de número | Máximo de número cvc |
|---|---|---|---|
| Visa | 4 | 13,16 | 3 |
| Mastercard | 5 | 16 | 3 |
erikhenrique
/ bin-cc.md
Last active
February 5, 2024 16:06
Bin de cartões de crédito para validação
DiegoSalazar
/ validate_credit_card.js
Last active
April 24, 2024 12:51
Luhn algorithm in Javascript. Check valid credit card numbers
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| // Takes a credit card string value and returns true on valid number | |
| function valid_credit_card(value) { | |
| // Accept only digits, dashes or spaces | |
| if (/[^0-9-\s]+/.test(value)) return false; | |
| // The Luhn Algorithm. It's so pretty. | |
| let nCheck = 0, bEven = false; | |
| value = value.replace(/\D/g, ""); | |
| for (var n = value.length - 1; n >= 0; n--) { |