adding_user_email_to_form.js

<script>
    document.addEventListener("DOMContentLoaded", function () {

        const forms = ['form1', 'form2', 'form3', 'form4'];
        const emailFieldName = 'Email';

        const userEmail = getUserEmail();

        forms.forEach(form => {
            $('#' + form).append('<input class="sw-form-capture-element" id="sw-form-capture-Email" type="hidden" data-type="short_text" name="'+emailFieldName+'" value="'+userEmail+'">');
        
            $('#' + form + ' #sw-form-capture-submit-btn').click(function() {
                setTimeout(function(){
                    $('#' + form + ' #sw-form-capture-Email').val(userEmail);
                }, 4000);
            });
        });

        function getUserEmail() {
            var token = getCookie('jwtToken');
            if (token) {
                var userData = parseJwt(token);
                if (userData && userData.sub) {
                    return userData.sub.toLowerCase();
                }
            }
            return '';
        }

        function getCookie(cookieName) {
            var name = cookieName + "=";
            var decodedCookie = decodeURIComponent(document.cookie);
            var ca = decodedCookie.split(';');
            for (var i = 0; i < ca.length; i++) {
                var c = ca[i];
                while (c.charAt(0) == ' ') {
                    c = c.substring(1);
                }
                if (c.indexOf(name) == 0) {
                    return c.substring(name.length, c.length);
                }
            }
            return "";
        }

        function parseJwt(token) {
            var base64Url = token.split('.')[1];
            var base64 = base64Url.replace(/-/g, '+').replace(/_/g, '/');
            var jsonPayload = decodeURIComponent(atob(base64).split('').map(function (c) {
                return '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2);
            }).join(''));

            return JSON.parse(jsonPayload);
        };
    });
</script>