如何将工具提示添加到fullcalander

Question

我无法在此日历中获取其他事件来显示工具提示，有人可以告诉我如何执行此操作吗？

  document.addEventListener('DOMContentLoaded', function() {
    var calendarEl = document.getElementById('calendar');

    var calendar = new FullCalendar.Calendar(calendarEl, {
      schedulerLicenseKey: '0414383191-fcs-1575447448',
      plugins: [ 'interaction', 'dayGrid', 'timeGrid', 'list', 'resourceTimeline' ],
      now: '2019-08-07',
      editable: false, // enable draggable events
      aspectRatio: 1.8,
      scrollTime: '00:00', // undo default 6am scrollTime
      header: {
        left: 'today prev,next',
        center: 'title',
        right: 'month,timeline3Months'
      },
      defaultView: 'resourceTimelineDay',
      views: {
        resourceTimelineThreeDays: {
          type: 'resourceTimeline',
          duration: { days: 3 },
          buttonText: '3 days'
        }
      },
      resourceLabelText: 'Rooms',
      resources: [
        { id: 'a', title: 'Auditorium A' },
        { id: 'b', title: 'Auditorium B', eventColor: 'green' },
        { id: 'c', title: 'Auditorium C', eventColor: 'orange' },
        { id: 'd', title: 'Auditorium D', children: [
          { id: 'd1', title: 'Room D1' },
          { id: 'd2', title: 'Room D2' }
        ] },
        { id: 'e', title: 'Auditorium E' },
        { id: 'f', title: 'Auditorium F', eventColor: 'red' },
        { id: 'g', title: 'Auditorium G' },
        { id: 'h', title: 'Auditorium H' },
        { id: 'i', title: 'Auditorium I' },
        { id: 'j', title: 'Auditorium J' },
        { id: 'k', title: 'Auditorium K' },
        { id: 'l', title: 'Auditorium L' },
        { id: 'm', title: 'Auditorium M' },
        { id: 'n', title: 'Auditorium N' },
        { id: 'o', title: 'Auditorium O' },
        { id: 'p', title: 'Auditorium P' },
        { id: 'q', title: 'Auditorium Q' },
        { id: 'r', title: 'Auditorium R' },
        { id: 's', title: 'Auditorium S' },
        { id: 't', title: 'Auditorium T' },
        { id: 'u', title: 'Auditorium U' },
        { id: 'v', title: 'Auditorium V' },
        { id: 'w', title: 'Auditorium W' },
        { id: 'x', title: 'Auditorium X' },
        { id: 'y', title: 'Auditorium Y' },
        { id: 'z', title: 'Auditorium Z' }
      ],

      eventRender: function(info) {
        var tooltip = new Tooltip(info.el, {
          title: info.event.extendedProps.description,
          placement: 'top',
          trigger: 'hover',
          container: 'body'
        });
      },      

      events: [
        { id: '1', resourceId: 'b', start: '2019-08-07T02:00:00', end: '2019-08-07T07:00:00', title: 'event 1',description: 'description for event 1' },
        { id: '2', resourceId: 'c', start: '2019-08-07T05:00:00', end: '2019-08-07T22:00:00', title: 'event 2',description: 'description for event 2' },
        { id: '3', resourceId: 'd', start: '2019-08-06', end: '2019-08-08', title: 'event 3',description: 'description for event 3' },
        { id: '4', resourceId: 'e', start: '2019-08-07T03:00:00', end: '2019-08-07T08:00:00', title: 'event 4',description: 'description for event 4' },
        { id: '5', resourceId: 'f', start: '2019-08-07T00:30:00', end: '2019-08-07T02:30:00', title: 'event 5',description: 'description for event 5' }
      ]
    });

    calendar.render();
  });

如果我删除了eventrender函数，将显示calander，但没有工具提示。如果我现在运行calander，则什么都不会显示。我从fullcalanders示例中获取了eventrender部分，但也许应该在函数中的其他地方添加它，以使其正常工作。但我不知道在那种情况下...