# Deprecated

> FullCalendar v1 documentation, for an old release. Web version: https://legacy.fullcalendar.io/v1/deprecated
>
> Upgrading to v7: https://fullcalendar.io/docs/upgrading-from-v6.md

## Articles

- [abbrevDayHeadings](https://legacy.fullcalendar.io/v1/abbrevDayHeadings.md) - Whether to display “Sun” versus “Sunday” for days of the week.
- [addEvent](https://legacy.fullcalendar.io/v1/addEvent.md) - Dynamically adds an Event Object to the calendar.
- [buttons](https://legacy.fullcalendar.io/v1/buttons.md) - Defines the buttons and button-text at the top of the calendar.
- [cacheParam](https://legacy.fullcalendar.io/v1/cacheParam.md) - A GET parameter of this name will be inserted into each JSON feed’s URL to prevent caching.
- [disableDragging](https://legacy.fullcalendar.io/v1/disableDragging.md) - Disables all event dragging, even when events are editable.
- [disableResizing](https://legacy.fullcalendar.io/v1/disableResizing.md) - Disables all event resizing, even when events are editable.
- [draggable](https://legacy.fullcalendar.io/v1/draggable.md) - Enables/disables dragging.
- [eventDragOpacity](https://legacy.fullcalendar.io/v1/eventDragOpacity.md) - In version 1.3, this option was renamed to dragOpacity.
- [eventRevertDuration](https://legacy.fullcalendar.io/v1/eventRevertDuration.md) - In version 1.3, this option was renamed to dragRevertDuration.
- [fixedWeeks](https://legacy.fullcalendar.io/v1/fixedWeeks.md) - Determines the number of weeks shown in each month.
- [formatDate (before version 1.3)](https://legacy.fullcalendar.io/v1/formatDate-pre-13.md) - Formats a Date object into a string.
- [getEventsById](https://legacy.fullcalendar.io/v1/getEventsById.md) - Retrieves all locally-stored events with the given ID.
- [monthDisplay](https://legacy.fullcalendar.io/v1/monthDisplay.md) - Triggered once when the calendar loads and every time the calendar’s month is changed.
- [nextMonth](https://legacy.fullcalendar.io/v1/nextMonth.md) - Moves the calendar forward one month.
- [prevMonth](https://legacy.fullcalendar.io/v1/prevMonth.md) - Moves the calendar back one month.
- [refresh](https://legacy.fullcalendar.io/v1/refresh.md) - Refetches and redraws the events for the current month.
- [removeEvent](https://legacy.fullcalendar.io/v1/removeEvent.md) - Remove an event with a given ID.
- [resize](https://legacy.fullcalendar.io/v1/resize.md) - In version 1.3, this callback was renamed to windowResize.
- [rightToLeft](https://legacy.fullcalendar.io/v1/rightToLeft.md) - In version 1.3, this option was renamed to isRTL.
- [title](https://legacy.fullcalendar.io/v1/title.md) - Determines whether a title such as “January 2009” will be displayed at the top of the calendar.
- [viewDisplay](https://legacy.fullcalendar.io/v1/viewDisplay.md) - Triggered when the calendar loads and every time a different date-range is displayed.
- [weekStart](https://legacy.fullcalendar.io/v1/weekStart.md) - In version 1.3, this option was renamed to firstDay.