$(function () {
            $('#logout_box').on('click', function (e) {
              $.ajax({
                type: 'post',
                url: 'logout.php',
                success: function ( msg ) {
                    document.getElementById('response').innerHTML = msg;
                    if(msg.includes("erfolgreich")){
                        window.location.reload();
                    }
                }
              });
            });
          });

        $(function () {
            $('#loginform').on('submit', function (e) {
                e.preventDefault();
              $.ajax({
                type: 'post',
                url: 'logincheck.php',
                data: "username=" + document.getElementById("username_field").value + "&password=" + document.getElementById("password_field").value,
                success: function ( msg ) {
                    document.getElementById('response').innerHTML = msg;
                    if(msg.includes("Erfolgreich")){
                        window.location.reload();
                    }
                }
              });
            });
          });