Generic Payment Card Number (13–19 digits) Regex for JavaScript

What this pattern does

This page provides a well-structured, multi-part regular expression for matching generic payment card number (13–19 digits), ported and verified for JavaScript. Financial data validation has zero tolerance for false negatives — a missed invalid entry can corrupt downstream calculations. The snippet below is ready to drop into your JavaScript project — whether you're validating in an Express middleware, a Next.js API route, or a client-side form.

Javascript Implementation

// Generic Payment Card Number (13–19 digits)
// ReDoS-safe | RegexVault — Finance > Card Numbers

const genericPaymentCardNumber1319DigitsRegex = /^(?:[0-9]{4}([\s-])[0-9]{4}\1[0-9]{4}\1[0-9]{1,7}|[0-9]{13,19})$/;

function validateGenericPaymentCardNumber1319Digits(input: string): boolean {
  return genericPaymentCardNumber1319DigitsRegex.test(input);
}

// Example
console.log(validateGenericPaymentCardNumber1319Digits("4111111111111111")); // true

Test Cases

When to use this pattern

This pattern is drawn from the Finance > Card Numbers category and carries a ReDoS-safe certification. That matters for JavaScript developers because especially critical in long-running Node.js event loops where a ReDoS vulnerability can block the entire process. RegexVault audits patterns against known backtracking attack vectors, ensuring you have the necessary context before using this regex in a high-stakes production environment.

Common Pitfalls

Technical Notes

Format only — does not validate the Luhn checksum. Always implement Luhn algorithm validation separately. PCI-DSS prohibits storing full PANs (Primary Account Numbers) without encryption.