问题内容: I am using fullcalendar library for the calendar feature. It has one of the callback function to change the viewRender of the calendar. I am modifying it to change the title to dropdown select by appending the html element. viewRender: function(view) { let title = view.title; $("#calendar").find('.fc-toolbar .fc-left > h2').empty().append( "<div className='Select Select-month'>" +