Package Exports

cc-validate

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Readme

Credit Card Validation

A credit card validation package that is based on luhn algorithm with some small additions to cover the loopholes of this algorithm.

Supported credit card types

Visa
MasterCard
AMEX
Discover
JCB
Diners Club

Demo

https://cc-validate.firebaseapp.com/

Input

Pass the credit card number as a string var result = isValid('4111111111111111');

Output

An object

result = {
    cardNumber : "4111 1111 1111 1111",  // Formatted credit card string
    cardType : 'Visa',  // credit card Type
    isValid : true,  // Boolean True if card is valid, false if it is invalid
    message : ''  // Success/Failure message
}

A detailed explanation of how the underlying algorithm works can be found in this article : https://link.medium.com/FZZwZ0YyXX

A typical use case in a credit card form to notify the user if the credit card number is entered is invalid

Download

You can install card-validator through npm.

Installation

npm install cc-validate --save

Usage

Javascript

var validate = require('cc-validate');
var result = validate.isValid('4196221438170266');

result = {
    cardNumber : "4196 2214 3817 0266", // Formatted Credit Card String
    cardType : 'Visa',  // Credit Card Type
    isValid : true,  // Boolean True if card is valid, false if it is invalid
    message : 'Credit Card number entered valid'  // Success/Failure message
}

TypeScript

import { isValid } from 'cc-validate';
let result = isValid('4196221438170266');

result = {
    cardNumber : "4196 2214 3817 0266", // Formatted Credit Card String
    cardType : 'Visa',		        // Credit Card Type
    isValid : true,			// Boolean True if card is valid, false if it is invalid
    message : 'Credit Card number entered valid' // Success/Failure message
}

Test

npm run test

Major and Recent Changes

V 2.0.5 : Added live demo link

V 2.0.4 : Added validation for Diners Club

V 2.0.0 : Addition of credit card type validation and card number formatting

V 1.0.9 First Stable Version