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document.addEventListener("DOMContentLoaded", function () { const form = document.querySelector('form[data-validate="true"]'); if (!form) return; const emailInput = form.querySelector('[data-type="email"]'); const phoneInput = form.querySelector('[data-type="phone"]'); function isValidEmail(email) { // Requires a domain and a valid TLD (e.g. .com, .io, .net, etc.) return /^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$/.test(email); } if (phoneInput) { phoneInput.addEventListener("input", function () { this.value = this.value.replace(/[^0-9\-\+\(\)\s]/g, ''); }); } form.addEventListener("submit", function (e) { let errors = []; if (emailInput) { const emailValue = emailInput.value.trim(); if (!isValidEmail(emailValue)) { errors.push("Please enter a valid email address (e.g., user@example.com)."); } } if (phoneInput) { const phoneValue = phoneInput.value.trim(); const phonePattern = /^[\+\d]?[\d\s\-\(\)]{7,20}$/; if (!phonePattern.test(phoneValue)) { errors.push("Please enter a valid phone number (e.g., +1 (123) 456-7890)."); } } if (errors.length > 0) { e.preventDefault(); // Stop native form submission e.stopImmediatePropagation(); // ✅ Prevent Webflow from submitting it alert(errors.join("\n")); } }, true); // ✅ Use capture phase to run before Webflow's own listener });