The cardholderName validation essentially tests for a valid string greater than 0 characters in length that does not look like a card number.Īll testing dependencies will be installed upon npm install. Valid.cardholderName(value: string): object If a valid card type cannot be determined, the card field in the response will be null.Ī fake session where a user is entering a card number may look like: Input npm install card-validatorĮxample Using a CommonJS build tool (browserify, webpack, etc) You can install card-validator through npm. Step 3: Click on the ' VALIDATE ' button and the credit card validator tool will do the rest. (If you need a test credit card number to validate, use our Credit Card Generator tool.) Step 2: Complete the CAPTCHA verification. Make sure that there are no spaces or dashes between the numbers. For example, if you detect a user is entering (or has entered) an American Express card number, you can update the maxlength attribute of your CVV input element from 3 to 4 and even update the corresponding label from 'CVV' to 'CID'. Step 1: Enter the credit card number in the input field. Additionally, by having access to the current card type, you can better manage the state of your credit card form as a whole. File Name:validator. Credit Cre validates credit card numbers right on your PC without going on-line or transmitting sensitive information from your PC. This is useful for scenarios in which you wish to render an accompanying payment method icon (Visa, MasterCard, etc.). Credit Card Number Validator is a free utility to help you check validity of a credit card number. Conversely, if a user enters “41x” that value can no longer pass strict validation and you can provide a response immediately.Ĭredit Card Validator will also provide a determined card type (using credit-card-type). In a credit card field, entering “411” is not necessarily valid for submission, but it is still potentially valid. The process of verifying if a credit card number is valid according to the Luhn algorith is simple. It includes first class support for 'potential' validity so you can use it to present appropriate UI to your user as they type.Ī typical use case in a credit card form is to notify the user if the data they are entering is invalid. It is designed as a CommonJS module for use in Node.js, io.js, or the browser. Credit Card Validator provides validation utilities for credit card data inputs.
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