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Docs Background Events

Events that appear as background highlights can be achieved by setting an Event Object’s rendering property to "background":

var calendar = new Calendar(calendarEl, {
  defaultDate: '2014-11-10',
  defaultView: 'timeGridWeek',
  events: [
    {
      start: '2014-11-10T10:00:00',
      end: '2014-11-10T16:00:00',
      rendering: 'background'
    }
  ]
});

Result:

background events example

Background events that are timed will only be rendered on the time slots in TimeGrid view. Background events that are all-day will only be rendered in month view or the all-day slots of TimeGrid view.

Color

The color of background events can be manipulated by targeting the fc-bgevent className, one of your own custom classNames provided by the Event Object’s className property, or by explicitly specifying a color with each Event Object’s or Event Source’s color or backgroundColor properties.

Inverse Backgrounds

The spans of time not occupied by an event can be colored by setting the rendering property to "inverse-background":

var calendar = new Calendar(calendarEl, {
  plugins: [ 'timeGrid' ],
  defaultDate: '2014-11-10',
  defaultView: 'timeGridWeek',
  events: [
    {
      groupId: 'testGroupId',
      start: '2014-11-10T10:00:00',
      end: '2014-11-10T16:00:00',
      rendering: 'inverse-background'
    }
  ]
});

Result:

inverse background example

Events that share the same groupId will be grouped together when this rendering happens.

Modifying Events

The editable property of a calendar determines whether the events on it can be modified. However, Background Events are not editable. They can not be dragged or resized.