example/index.html

<!DOCTYPE html>
<html>
<head>
  <script src="../dist/payment.js"></script>

  <style type="text/css" media="screen">
    input.invalid {
      border: 2px solid red;
    }

    .validation.failed:after {
      color: red;
      content: 'Validation failed';
    }

    .validation.passed:after {
      color: green;
      content: 'Validation passed';
    }
  </style>

</head>
<body>

  <form novalidate autocomplete="on">
    <h2>Card number formatting</h2>

    <input type="text" class="cc-number" pattern="\d*" x-autocompletetype="cc-number" placeholder="Card number" required>

    <h2>Expiry formatting</h2>

    <input type="text" class="cc-exp" pattern="\d*" x-autocompletetype="cc-exp" placeholder="Expires MM/YY" required maxlength="9">

    <h2>CVC formatting</h2>
    <input type="text" class="cc-cvc" pattern="\d*" x-autocompletetype="cc-csc" placeholder="Security code" required  autocomplete="off">

    <h2>Restrict Numeric</h2>

    <input type="text" data-numeric>

    <h2 class="validation"></h2>

    <button type="submit">Submit</button>
  </form>


  <script>
    var J = Payment.J,
      numeric = document.querySelector('[data-numeric]'),
      number = document.querySelector('.cc-number'),
      exp = document.querySelector('.cc-exp'),
      cvc = document.querySelector('.cc-cvc'),
      validation = document.querySelector('.validation');

    Payment.restrictNumeric(numeric);
    Payment.formatCardNumber(number, 16);
    Payment.formatCardExpiry(exp);
    Payment.formatCardCVC(cvc);

    document.querySelector('form').onsubmit = function(e) {
      e.preventDefault();
      J.toggleClass(document.querySelectorAll('input'), 'invalid');
      J.removeClass(validation, 'passed failed');

      var cardType = Payment.fns.cardType(J.val(number));

      J.toggleClass(number, 'invalid', !Payment.fns.validateCardNumber(J.val(number)));
      J.toggleClass(exp, 'invalid', !Payment.fns.validateCardExpiry(Payment.cardExpiryVal(exp)));

      J.toggleClass(cvc, 'invalid', !Payment.fns.validateCardCVC(J.val(cvc), cardType));

      if (document.querySelectorAll('.invalid').length) {
        J.addClass(validation, 'failed');
      } else {
        J.addClass(validation, 'passed');
      }
    }
  </script>
</body>
</html>