Card Validator provides a JavaScript library for validating credit card data. It allows developers to determine if a card number is potentially valid as a user types, enhancing the user experience by providing immediate feedback. The library utilizes Luhn's algorithm and card type recognition to improve the accuracy and usefulness of validation.
The library offers insightful potential validity checks, allowing for proactive UI updates. It includes card type detection, enabling the rendering of appropriate payment method icons and tailored form adjustments. It offers flexible options for overriding validation behavior, such as skipping Luhn validation or adjusting maximum length.
- Potential Validity: Determines if a card number is likely valid as the user types, providing real-time feedback without requiring the entire number to be entered.
- Card Type Detection: Identifies the card type (Visa, Mastercard, etc.) and provides associated data like card length and CVV length.
- Extensible Validation: Supports customization through options for Luhn validation and maximum length limits, adaptable to diverse requirements.
- Flexible Configuration: Offers options to skip Luhn validation or adjust maximum lengths for specific card types, catering to varied validation needs.
- Cardholder Name Validation: Validates cardholder name format, ensuring it is a reasonable string.
- Browser Support: Compatible with browser environments via Browserify or similar bundlers.
- Clear API: Provides a straightforward and well-documented API for easy integration into existing projects.
The project is actively maintained with recent commits and a stable release history. Regular testing via unit tests and a sizable community demonstrating ongoing usage suggest a reliable and well-supported library.
Card Validator benefits developers building web applications requiring robust credit card input validation. It provides a smooth user experience by offering real-time feedback and simplifies form handling through card type detection. Compared to manual validation methods, this library offers improved accuracy, usability, and reduces server load.