版本：6.1.5
- https://cdn.bootcdn.net/ajax/libs/fullcalendar/6.1.5/index.global.js
- https://cdn.bootcdn.net/ajax/libs/fullcalendar/6.1.5/index.global.min.js
- https://cdn.bootcdn.net/ajax/libs/fullcalendar/6.1.5/index.js
- https://cdn.bootcdn.net/ajax/libs/fullcalendar/6.1.5/index.min.js