I would be glad if someone help me for javascript. My code works and it shows the data in this way. but I need to show it with array, which I couldn't. Thanks for all help!!:)) so this is my jquery code:
jQuery(document).ready(function () {
        _user = JSON.parse('@Html.Raw(Json.Serialize(Model.User))');
        KTCalendarBasic.init();
        user_appointments_list = _user.user_appointments;
        for (var i = 0; i < user_appointments_list.length; i++) {
            user_appointment_date_list[i] = user_appointments_list[i].appointment_time;
        }
    });
and this is my fullcalendar usage. it works fine for one json data object.
var KTCalendarBasic = function () {
        return {
        init: function () {
                events:
                    [
                    {
                        title: 'Hatırlatıcı',
                        start: _user.user_reminders[0].remind_date,
                        end: _user.user_reminders[0].remind_date,
                        description: "NOT: " + _user.user_reminders[0].note + " GAYRİMENKUL ADRESİ: " + _user.user_reminders[0].asset_address + " MÜŞTERİ: " + _user.user_reminders[0].customer_full_name + " MÜŞTERİ TELEFONU: " + _user.user_reminders[0].customer_phone,
                        className: "fc-event-danger fc-event-solid-warning"
                    },
                    {
                        title: 'Randevu',
                        //start: YM + '-14T13:30:00',
                        start: _user.user_appointments[0].appointment_time,
                        description: "ADRES: " + _user.user_appointments[0].appointment_place + " MÜŞTERİ: " + _user.user_appointments[0].customer_full_name,
                        //description: _user.user_appointments.appointment_time,
                        end: _user.user_appointments[0].appointment_time,
                        className: "fc-event-success",
                    }
                    ],
                eventRender: function (info) {
                    var element = $(info.el);
                    if (info.event.extendedProps && info.event.extendedProps.description) {
                        if (element.hasClass('fc-day-grid-event')) {
                            element.data('content', info.event.extendedProps.description);
                            element.data('placement', 'top');
                            KTApp.initPopover(element);
                        } else if (element.hasClass('fc-time-grid-event')) {
                            element.find('.fc-title').append('<div class="fc-description">' + info.event.extendedProps.description + '</div>');
                        } else if (element.find('.fc-list-item-title').lenght !== 0) {
                            element.find('.fc-list-item-title').append('<div class="fc-description">' + info.event.extendedProps.description + '</div>');
                        }
                    }
                }
            });
            calendar.render();
        }
    };
}();
    
I have to fix it with array which I write and it turns correctly in jquery part. I have to implement this array inside the fullcalendar usage part. Thank you!:))
init: function () {
                    for (var j = 0; j < user_appointment_date_list.length; j++) {
                        var currentValue = user_appointment_date_list[j];
                        var todayDate = moment().startOf('day');
I tried this code. and rewrite the event part. the final whole code is:
var KTCalendarBasic = function () {
            return {
                //main function to initiate the module
                init: function () {
                    for (var j = 0; j < user_appointment_date_list.length; j++) {
                        var currentValue = user_appointment_date_list[j];
                        var todayDate = moment().startOf('day');
                        var YM = todayDate.format('YYYY-MM');
                        var YESTERDAY = todayDate.clone().subtract(1, 'day').format('YYYY-MM-DD');
                        var TODAY = todayDate.format('YYYY-MM-DD');
                        var TOMORROW = todayDate.clone().add(1, 'day').format('YYYY-MM-DD');
                        var calendarEl = document.getElementById('kt_calendar');
                        var calendar = new FullCalendar.Calendar(calendarEl, {
                            plugins: ['bootstrap', 'interaction', 'dayGrid', 'timeGrid', 'list'],
                            themeSystem: 'bootstrap',
                            isRTL: KTUtil.isRTL(),
                            header: {
                                left: 'prev,next today',
                                center: 'title',
                                right: 'dayGridMonth,timeGridWeek,timeGridDay'
                            },
                            height: 800,
                            contentHeight: 780,
                            aspectRatio: 3,  // see: https://fullcalendar.io/docs/aspectRatio
                            nowIndicator: true,
                            //now: TODAY + 'T09:25:00', // just for demo
                            views: {
                                dayGridMonth: { buttonText: 'month' },
                                timeGridWeek: { buttonText: 'week' },
                                timeGridDay: { buttonText: 'day' }
                            },
                            defaultView: 'dayGridMonth',
                            defaultDate: TODAY,
                            editable: false,
                            eventLimit: true, // allow "more" link when too many events
                            navLinks: true,
                            events:
                                [
                                    {
                                      
                                        title: 'Hatırlatıcı',
                                        //start: user_appointment_date_list,
                                        //start: item.remind_date,
                                        //end: item.remind_date,
                                        //description: "NOT: " + item.note + " GAYRİMENKUL ADRESİ: " + item.asset_address + " MÜŞTERİ: " + item.customer_full_name + " MÜŞTERİ TELEFONU: " + item.customer_phone,
                                        className: "fc-event-danger fc-event-solid-warning",
                                        startRecur: currentValue,
                                        endRecur: currentValue
                                    },
                                    {
                                        title: 'Randevu',
                                        //start: YM + '-14T13:30:00',
                                        start: _user.user_appointments[0].appointment_time,
                                        description: "ADRES: " + _user.user_appointments[0].appointment_place + " MÜŞTERİ: " + _user.user_appointments[0].customer_full_name,
                                        //description: _user.user_appointments.appointment_time,
                                        end: _user.user_appointments[0].appointment_time,
                                        className: "fc-event-success",
                                    }
                                ],
                            eventRender: function (info) {
                                var element = $(info.el);
                                if (info.event.extendedProps && info.event.extendedProps.description) {
                                    if (element.hasClass('fc-day-grid-event')) {
                                        element.data('content', info.event.extendedProps.description);
                                        element.data('placement', 'top');
                                        KTApp.initPopover(element);
                                    } else if (element.hasClass('fc-time-grid-event')) {
                                        element.find('.fc-title').append('<div class="fc-description">' + info.event.extendedProps.description + '</div>');
                                    } else if (element.find('.fc-list-item-title').lenght !== 0) {
                                        element.find('.fc-list-item-title').append('<div class="fc-description">' + info.event.extendedProps.description + '</div>');
                                    }
                                }
                            }
                        });
                        calendar.render();
                    }
                }
            };
        }();
I am trying to solve title: 'Hatırlatıcı' part in events.
