testing event <script> // Anti double-submit: disable button after first click (function() { document.addEventListener('DOMContentLoaded', function() { var forms = document.querySelectorAll('form[action]'); forms.forEach(function(form) { form.addEventListener('submit', function() { var btn = form.querySelector('button[type=submit]'); if (btn) { btn.disabled = true; btn.textContent = 'Processing...'; } }); }); }); })(); </script>