document.addEventListener('DOMContentLoaded', function () { var form = document.getElementById('wpforms-form-8953'); // Replace 'your-form-id' with the actual ID of your form var errorDiv = document.getElementById('wpforms-8953-field_2-error'); // Replace 'error-message-div' with the actual ID of your error message div form.addEventListener('submit', function (event) { var messageField = document.getElementById('wpforms-8953-field_2'); // Replace 'your-message-field-id' with the actual ID of your message field var messageValue = messageField.value; // Check for URLs in the message field if (containsUrl(messageValue)) { // Display error message in the specified div errorDiv.innerHTML = 'Error: URLs are not allowed in the message field'; event.preventDefault(); // Prevent form submission } else { // Clear the error message if no error errorDiv.innerHTML = ''; } }); // Function to check if the string contains a URL function containsUrl(str) { var urlRegex = /(http(s)?:\/\/[^\s]+)/gi; return urlRegex.test(str); } });