SignUp.js

const LOGIN_DATABASE_URI = "http://localhost:4000/Users";

$(document).ready(function (){

    var $email = $('#email');
    var $username = $('#username');
    var $password = $('#password');

    $('#signUp').on('click', function (e) {
        e.preventDefault();

        // A function to check if the fields are empty
        function checkData(caller){
            if (caller.val() == ""){
               // console.log(caller.parent().closest('small'));
                 
                return false;
            } else {
                return true;
            }
        }

        if(checkData($email) && checkData($username) && checkData($password)){
            var details = {
                email: $email.val(),
                UserName: $username.val(),
                PassWord: $password.val()
            };

            //console.log(details)

            //$.post("http://localhost:4000/Users", details, alert('User has been created'));

            $.ajax({
                type: 'POST',
                url: LOGIN_DATABASE_URI,
                data: details,
                success: function () {

                    //alert('saved Successfully, now you can log in!');
                     M.toast({
                         html: 'saved Successfully, now you can log in! ❗'
                     });

                },
                error: (error) => {
                    alert('error saving!');
                }
            });

        } else {
             M.toast({
                 html: 'Make sure you filled out all the required fields ❗'
             });
        }

        
    });


});