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@event-calendar/list

Full-sized drag & drop event calendar with resource & timeline views

  • 3.7.2
  • latest
  • Source
  • npm
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Event Calendar npm

See demo and changelog.

Full-sized drag & drop JavaScript event calendar with resource & timeline views:

  • Lightweight (37kb br compressed)
  • Zero-dependency (pre-built bundle)
  • Used on over 70,000 websites with Bookly

Inspired by FullCalendar, implements similar options.

Table of contents

Usage

JavaScript module / Svelte component

The first step is to install the Event Calendar core package:

npm install --save-dev @event-calendar/core

Then install any additional plugins you plan to use:

npm install --save-dev @event-calendar/time-grid

You must use at least one plugin that provides a view. The following plugins are currently available:

  • @event-calendar/day-grid
  • @event-calendar/list
  • @event-calendar/resource-timeline
  • @event-calendar/resource-time-grid
  • @event-calendar/time-grid
  • @event-calendar/interaction (doesn't provide a view)

Then, in your JavaScript module:

import Calendar from '@event-calendar/core';
import TimeGrid from '@event-calendar/time-grid';
// Import CSS if your build tool supports it
import '@event-calendar/core/index.css';

let ec = new Calendar({
    target: document.getElementById('ec'),
    props: {
        plugins: [TimeGrid],
        options: {
            view: 'timeGridWeek',
            events: [
                // your list of events
            ]
        }
    }
});

Or in your Svelte component, use the calendar like this:

<script>
    import Calendar from '@event-calendar/core';
    import TimeGrid from '@event-calendar/time-grid';

    let plugins = [TimeGrid];
    let options = {
        view: 'timeGridWeek',
        events: [
            // your list of events
        ]
    };
</script>

<Calendar {plugins} {options} />

Pre-built browser ready bundle

Include the following lines of code in the <head> section of your page:

<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@event-calendar/build@3.7.2/event-calendar.min.css">
<script src="https://cdn.jsdelivr.net/npm/@event-calendar/build@3.7.2/event-calendar.min.js"></script>
Note

Please note that the file paths contain an indication of a specific version of the library. You can remove this indication, then the latest version will be loaded:

<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@event-calendar/build/event-calendar.min.css">
<script src="https://cdn.jsdelivr.net/npm/@event-calendar/build/event-calendar.min.js"></script>

But it is recommended to always specify the version and explicitly update it if necessary, in order to avoid unpredictable problems when a new version of the library is released.

Then initialize the calendar like this:

let ec = new EventCalendar(document.getElementById('ec'), {
    view: 'timeGridWeek',
    events: [
        // your list of events
    ]
});

Modifying options after initialization

You can modify the calendar options after initialization using the setOption method.

ec.setOption('slotDuration', '01:00');

In Svelte, you can simply update the original options object.

<script>
    import Calendar from '@event-calendar/core';
    import TimeGrid from '@event-calendar/time-grid';

    let plugins = [TimeGrid];
    let options = {
        view: 'timeGridWeek'
    };

    function updateOptions() {
        options.slotDuration = '01:00';
    }
</script>

<button on:click={updateOptions}>Change slot duration</button>
<Calendar {plugins} {options} />

Options

allDayContent

  • Type Content or function
  • Default 'all-day'

Defines the content that is displayed as a title of the all-day slot.

This value can be either a Content or a function that returns content:

function (arg) {
    // return Content
}

arg is an object with the following properties:

text

The default text

allDaySlot

  • Type boolean
  • Default true

Determines whether the all-day slot is displayed at the top of the calendar.

When hidden with false, all-day events will not be displayed in timeGrid/resourceTimeGrid views.

buttonText

  • Type object or function
  • Default {close: 'Close', dayGridMonth: 'month', listDay: 'list', listMonth: 'list', listWeek: 'list', listYear: 'list', resourceTimeGridDay: 'resources', resourceTimeGridWeek: 'resources', resourceTimelineDay: 'timeline', resourceTimelineMonth: 'timeline', resourceTimelineWeek: 'timeline', timeGridDay: 'day', timeGridWeek: 'week', today: 'today'}

Views override the default value as follows:

  • dayGridMonth text => ({...text, next: 'Next month', prev: 'Previous month'})
  • listDay text => ({...text, next: 'Next day', prev: 'Previous day'})
  • listMonth text => ({...text, next: 'Next month', prev: 'Previous month'})
  • listWeek text => ({...text, next: 'Next week', prev: 'Previous week'})
  • listYear text => ({...text, next: 'Next year', prev: 'Previous year'})
  • resourceTimeGridDay text => ({...text, next: 'Next day', prev: 'Previous day'})
  • resourceTimeGridWeek text => ({...text, next: 'Next week', prev: 'Previous week'})
  • resourceTimelineDay text => ({...text, next: 'Next day', prev: 'Previous day'})
  • resourceTimelineMonth text => ({...text, next: 'Next month', prev: 'Previous month'})
  • resourceTimelineWeek text => ({...text, next: 'Next week', prev: 'Previous week'})
  • timeGridDay text => ({...text, next: 'Next day', prev: 'Previous day'})
  • timeGridWeek text => ({...text, next: 'Next week', prev: 'Previous week'})

Text that is displayed in buttons of the header toolbar.

This value can be either a plain object with all necessary properties, or a callback function that receives default button text object and should return a new one:

function (text) {
  // return new button text object
}

text

An object with default button text

customButtons

  • Type object
  • Default {}

Defines custom buttons that can be used in the headerToolbar.

First, specify the custom buttons as key-value pairs. Then reference them from the headerToolbar option.

Example
let options = {
    customButtons: {
        myCustomButton: {
            text: 'custom!',
            click: function() {
                alert('clicked the custom button!');
            }
        }
    },
    headerToolbar: {
        start: 'title myCustomButton',
        center: '',
        end: 'today prev,next'
    }
};

Each customButton entry accepts the following properties:

text

The text to be display on the button itself. See Content

click

A callback function that is called when the button is clicked. Accepts one argument mouseEvent

active

If true, the button will appear pressed/active

date

  • Type Date or string
  • Default new Date()

Date that is currently displayed on the calendar.

This value can be either a JavaScript Date object, or an ISO8601 date string like '2022-12-31'.

dateClick

  • Type function
  • Default undefined
  • Requires Interaction plugin

Callback function that is triggered when the user clicks on a date or a time.

function (info) {}

info is an object with the following properties:

date

JavaScript Date object for the clicked date and time

dateStr

ISO8601 string representation of the date

allDay

true or false. Determines if the click has occurred in the all-day slot. Month and list views are also considered as all-day slots

dayEl

HTML element that represents the whole-day that was clicked on

jsEvent

JavaScript native event object with low-level information such as click coordinates

view

The current View object

resource

If the current view is a resource view, the Resource object that owns this date

datesAboveResources

  • Type boolean
  • Default false

Determines whether the resource view should render the date headings above the resource headings.

datesSet

  • Type function
  • Default undefined

Callback function that is triggered when the date range of the calendar was originally set or changed by clicking the previous/next buttons, changing the view, manipulating the current date via the API, etc.

function (info) {}

info is an object with the following properties:

start

JavaScript Date object for the beginning of the range the calendar needs events for

end

JavaScript Date object for the end of the range the calendar needs events for. Note: This value is exclusive

startStr

ISO8601 string representation of the start date

endStr

ISO8601 string representation of the end date

view

The current View object

dayCellFormat

  • Type object or function
  • Default {day: 'numeric'}

Defines the text that is displayed inside the day cell in the dayGrid view.

This value can be either an object with options for the native JavaScript Intl.DateTimeFormat object, or a callback function that returns a Content with the formatted string:

function (date) {
  // return Content with the formatted date string
}

date

JavaScript Date object that needs to be formatted

dayHeaderAriaLabelFormat

  • Type object or function
  • Default {dateStyle: 'long'}

Views override the default value as follows:

  • dayGridMonth {weekday: 'long'}

Defines the text that is used inside the aria-label attribute in calendar column headings.

This value can be either an object with options for the native JavaScript Intl.DateTimeFormat object, or a callback function that returns formatted string:

function (date) {
    // return formatted date string
}

date

JavaScript Date object that needs to be formatted

dayHeaderFormat

  • Type object or function
  • Default {weekday: 'short', month: 'numeric', day: 'numeric'}

Views override the default value as follows:

  • dayGridMonth {weekday: 'short'}
  • resourceTimelineMonth {weekday: 'short', day: 'numeric'}
  • timeGridDay {weekday: 'long'}

Defines the text that is displayed on the calendar’s column headings.

This value can be either an object with options for the native JavaScript Intl.DateTimeFormat object, or a callback function that returns a Content with the formatted string:

function (date) {
    // return Content with the formatted date string
}

date

JavaScript Date object that needs to be formatted

dayMaxEvents

  • Type boolean
  • Default false

Determines the maximum number of stacked event levels for a given day in the dayGrid view.

If there are too many events, a link like +2 more is displayed.

Currently, only the value true is supported, which limits the number of events to the height of the day cell.

dayPopoverFormat

  • Type object or function
  • Default {month: 'long', day: 'numeric', year: 'numeric'}

Defines the date format of title of the popover created by the dayMaxEvents option.

This value can be either an object with options for the native JavaScript Intl.DateTimeFormat object, or a callback function that returns a Content with the formatted string:

function (date) {
    // return Content with the formatted date string
}

displayEventEnd

  • Type boolean
  • Default true

Views override the default value as follows:

  • dayGridMonth false
  • resourceTimelineDay false
  • resourceTimelineMonth false
  • resourceTimelineWeek false

Determines whether to display an event’s end time.

dragScroll

  • Type boolean
  • Default true
  • Requires Interaction plugin

Determines whether the calendar should automatically scroll during the event drag-and-drop when the mouse crosses the edge.

duration

  • Type string, integer or object
  • Default {weeks: 1}

Views override the default value as follows:

  • dayGridMonth {months: 1}
  • listDay {days: 1}
  • listMonth {months: 1}
  • listYear {years: 1}
  • resourceTimeGridDay {days: 1}
  • resourceTimelineDay {days: 1}
  • resourceTimelineMonth {months: 1}
  • timeGridDay {days: 1}

Sets the duration of a view.

This should be a value that can be parsed into a Duration object.

editable

  • Type boolean
  • Default false
  • Requires Interaction plugin

Determines whether the events on the calendar can be dragged and resized (both at the same time).

If you don't need both, use the more specific eventStartEditable and eventDurationEditable instead.

events

  • Type array
  • Default []

Array of plain objects that will be parsed into Event objects and displayed on the calendar.

This option is not used if the eventSources option is provided.

eventAllUpdated

  • Type function
  • Default undefined

Callback function that is triggered when all events have finished updating.

This is an experimental feature and its behavior may change in the future. The function is called at the end of the cycle of rendering all events. The rendering occurs when new events are added, already displayed events are modified, or events are deleted.

function (info) { }

info is an object with the following properties:

view

The current View object

eventBackgroundColor

  • Type string
  • Default undefined

Sets the default background color for events on the calendar.

You can use any of the CSS color formats such '#f00', '#ff0000', 'rgb(255,0,0)', or 'red'.

eventClassNames

  • Type string, array or function
  • Default undefined

Sets additional CSS classes for events.

This value can be either a string containing class names 'class-1 class-2 ...', an array of strings ['class-1', 'class-2', ...] or a function that returns any of the above formats:

function (info) {
    // return string or array
}

info is an object with the following properties:

event

The associated Event object

view

The current View object

eventClick

  • Type function
  • Default undefined

Callback function that is triggered when the user clicks an event.

function (info) { }

info is an object with the following properties:

el

The HTML element for the event

event

The associated Event object

jsEvent

JavaScript native event object with low-level information such as click coordinates

view

The current View object

eventColor

  • Type string
  • Default undefined

This is currently an alias for the eventBackgroundColor.

eventContent

  • Type Content or function
  • Default undefined

Defines the content that is rendered inside an event’s element.

This value can be either a Content or a function that returns content or undefined:

function (info) {
    // return Content or undefined
}

info is an object with the following properties:

event

The associated Event object

timeText

Formatted time of the event

view

The current View object

In case the function returns undefined, the event will be rendered in the default way.

eventDidMount

  • Type function
  • Default undefined

Callback function that is triggered right after the element has been added to the DOM. If the event data changes, this is not called again.

function (info) { }

info is an object with the following properties:

el

The HTML element for the event

event

The associated Event object

timeText

Formatted time of the event

view

The current View object

eventDragMinDistance

  • Type integer
  • Default 5
  • Requires Interaction plugin

Defines how many pixels the user’s mouse must move before the event dragging begins.

eventDragStart

  • Type function
  • Default undefined
  • Requires Interaction plugin

Callback function that is triggered when the event dragging begins.

function (info) { }

info is an object with the following properties:

event

The associated Event object

jsEvent

JavaScript native event object with low-level information such as click coordinates

view

The current View object

eventDragStop

  • Type function
  • Default undefined
  • Requires Interaction plugin

Callback function that is triggered when the event dragging stops.

It is triggered before the event’s information has been modified (if moved to a new date/time) and before the eventDrop callback is triggered.

function (info) { }

info is an object with the following properties:

event

The associated Event object

jsEvent

JavaScript native event object with low-level information such as click coordinates

view

The current View object

eventDrop

  • Type function
  • Default undefined
  • Requires Interaction plugin

Callback function that is triggered when dragging stops, and the event has moved to a different day/time.

It is triggered after the event’s information has been modified and after the eventDragStop callback has been triggered.

function (info) { }

info is an object with the following properties:

event

The associated Event object

oldEvent

An Event object that holds information about the event before the drop

oldResource

If the resource has changed, this is the Resource object the event came from. If the resource has not changed, this will be undefined

newResource

If the resource has changed, this is the Resource object the event went to. If the resource has not changed, this will be undefined

delta

A Duration object that represents the amount of time the event was moved by

revert

A function that, if called, reverts the event’s start/end date to the values before the drag

jsEvent

JavaScript native event object with low-level information such as click coordinates

view

The current View object

eventDurationEditable

  • Type boolean
  • Default true
  • Requires Interaction plugin

Determines whether calendar events can be resized.

eventLongPressDelay

  • Type integer
  • Default undefined
  • Requires Interaction plugin

For touch devices, the amount of time (in milliseconds) the user must hold down a tap before the event becomes draggable/resizable.

If not specified, it falls back to longPressDelay.

eventMouseEnter

  • Type function
  • Default undefined

Callback function that is triggered when the user hovers over an event with the cursor (mouse pointer).

function (info) { }

info is an object with the following properties:

el

The HTML element for the event

event

The associated Event object

jsEvent

JavaScript native event object with low-level information such as click coordinates

view

The current View object

eventMouseLeave

  • Type function
  • Default undefined

Callback function that is triggered when the cursor (mouse pointer) is moved out of an event.

function (info) { }

info is an object with the following properties:

el

The HTML element for the event

event

The associated Event object

jsEvent

JavaScript native event object with low-level information such as click coordinates

view

The current View object

eventResize

  • Type function
  • Default undefined
  • Requires Interaction plugin

Callback function that is triggered when resizing stops, and the duration of the event has changed.

It is triggered after the event’s information has been modified and after the eventResizeStop callback has been triggered.

function (info) { }

info is an object with the following properties:

event

The associated Event object

oldEvent

An Event object that holds information about the event before the resize

endDelta

A Duration object that represents the amount of time the event’s end date was moved by

revert

A function that, if called, reverts the event’s end date to the values before the resize

jsEvent

JavaScript native event object with low-level information such as click coordinates

view

The current View object

eventResizeStart

  • Type function
  • Default undefined
  • Requires Interaction plugin

Callback function that is triggered when the event resizing begins.

function (info) { }

info is an object with the following properties:

event

The associated Event object

jsEvent

JavaScript native event object with low-level information such as click coordinates

view

The current View object

eventResizeStop

  • Type function
  • Default undefined
  • Requires Interaction plugin

Callback function that is triggered when the event resizing stops.

It is triggered before the event’s information has been modified (if duration is changed) and before the eventResize callback is triggered.

function (info) { }

info is an object with the following properties:

event

The associated Event object

jsEvent

JavaScript native event object with low-level information such as click coordinates

view

The current View object

eventSources

  • Type EventSource[]
  • Default []

Array of EventSource objects that will provide the Event Calendar with data about events.

This option is used instead of the events option.

EventSource should be an object with one of the following sets of properties:

1. Fetch events from a URL

url

A URL that the calendar will fetch Event objects from. HTTP requests with the following parameters will be sent to this URL whenever the calendar needs new event data:

start

Start date of the range the calendar needs events for

end

End date of the range the calendar needs events for

method

HTTP request method. Default 'GET'

extraParams

Other GET/POST data you want to send to the server. Can be a plain object or a function that returns an object. Default {}

2. Execute custom function

events

A custom function that is executed whenever the Event Calendar needs new event data.

function(fetchInfo, successCallback, failureCallback) { }

fetchInfo is an object with the following properties:

start

JavaScript Date object for the beginning of the range the calendar needs events for

end

JavaScript Date object for the end of the range the calendar needs events for. Note: This value is exclusive

startStr

ISO8601 string representation of the start date

endStr

ISO8601 string representation of the end date

The successCallback function must be called by the custom function with an array of parsable Event objects.

If there is any failure (e.g., if an AJAX request fails), then call the failureCallback instead. It accepts an argument with information about the failure.

Instead of calling successCallback and failureCallback, you may return the resulting array of events or return a Promise (or thenable) object instead.

eventStartEditable

  • Type boolean
  • Default true
  • Requires Interaction plugin

Determines whether the events on the calendar can be dragged.

eventTimeFormat

  • Type object or function
  • Default {hour: 'numeric', minute: '2-digit'}

Defines the time-text that is displayed on each event.

This value can be either an object with options for the native JavaScript Intl.DateTimeFormat object, or a callback function that returns a Content with the formatted string:

function (start, end) {
    // return Content with the formatted time string
}

start

JavaScript Date object containing the beginning of the time span to be formatted

end

JavaScript Date object containing the end of the time span to be formatted

eventTextColor

  • Type string
  • Default undefined

Sets the default text color for events on the calendar.

You can use any of the CSS color formats such '#f00', '#ff0000', 'rgb(255,0,0)', or 'red'.

filterEventsWithResources

  • Type boolean
  • Default false

Determines whether events that do not belong to the current array of resources should be hidden in dayGrid/timeGrid/list views.

filterResourcesWithEvents

  • Type boolean
  • Default false

Determines whether resources with no events for the current range should be hidden in the resource view.

firstDay

  • Type integer
  • Default 0

The day that each week begins at, where Sunday is 0, Monday is 1, etc. Saturday is 6.

flexibleSlotTimeLimits

  • Type boolean or object
  • Default false

Determines whether slotMinTime and slotMaxTime should automatically expand when an event goes out of bounds.

If set to true, then the decision on whether to expand the limits will be made based on the analysis of currently displayed events, but excluding background events.

If you want background events not to be ignored, then instead of true you can pass an object with the following properties:

eventFilter

A function to determine whether a given event should be taken into account or not.

function(event) {
    // return true or false
}

event

Event object to be analyzed.

The function must return true to have this event counted, or false to ignore it

headerToolbar

  • Type object
  • Default {start: 'title', center: '', end: 'today prev,next'}

Defines the buttons and title at the top of the calendar.

An object can be supplied with properties start,center,end. These properties contain strings with comma/space separated values. Values separated by a comma will be displayed adjacently. Values separated by a space will be displayed with a small gap in between. Strings can contain any of the following values:

title

A text containing the current month/week/day

prev

A button for moving the calendar back one month/week/day

next

A button for moving the calendar forward one month/week/day

today

A button for moving the calendar to the current month/week/day

a view name like dayGridMonth

A button that will switch the calendar to a specific view

height

  • Type string
  • Default undefined

Defines the height of the entire calendar.

This should be a valid CSS value like '100%' or '600px'.

hiddenDays

  • Type array
  • Default []

Exclude certain days-of-the-week from being displayed, where Sunday is 0, Monday is 1, etc. Saturday is 6.

highlightedDates

  • Type array
  • Default []

Array of dates that need to be highlighted in the calendar.

Each date can be either an ISO8601 date string like '2022-12-31', or a JavaScript Date object.

lazyFetching

  • Type boolean
  • Default true

Determines when event fetching should occur.

When set to true (the default), the calendar will only fetch events when it absolutely needs to, minimizing HTTP requests. For example, say your calendar starts out in month view, in February. The Event Calendar will fetch events for the entire month of February and store them in its internal storage. Then, say the user switches to week view and begins browsing the weeks in February. The calendar will avoid fetching events because it already has this information stored.

When set to false, the calendar will fetch events any time the view is switched, or any time the current date changes (for example, as a result of the user clicking prev/next).

listDayFormat

  • Type object or function
  • Default {weekday: 'long'}

Defines the text on the left side of the day headings in list view.

This value can be either an object with options for the native JavaScript Intl.DateTimeFormat object, or a callback function that returns a Content with the formatted string:

function (date) {
  // return Content with the formatted date string
}

date

JavaScript Date object that needs to be formatted

listDaySideFormat

  • Type object or function
  • Default {year: 'numeric', month: 'long', day: 'numeric'}

Defines the text on the right side of the day headings in list view.

This value can be either an object with options for the native JavaScript Intl.DateTimeFormat object, or a callback function that returns a Content with the formatted string:

function (date) {
  // return Content with the formatted date string
}

date

JavaScript Date object that needs to be formatted

loading

  • Type function
  • Default undefined

Callback function that is triggered when event fetching starts/stops.

function (isLoading) { }

isLoading

true when the calendar begins fetching events, false when it’s done.

locale

  • Type string
  • Default undefined

Defines the locales parameter for the native JavaScript Intl.DateTimeFormat object that the Event Calendar uses to format date and time strings in options such as dayHeaderFormat, eventTimeFormat, etc.

longPressDelay

  • Type integer
  • Default 1000

For touch devices, the amount of time (in milliseconds) the user must hold down a tap before the event becomes draggable/resizable or the date becomes selectable.

For a more granular configuration, see eventLongPressDelay and selectLongPressDelay.

moreLinkContent

  • Type Content or function
  • Default undefined

Defines the text that is displayed instead of the default +2 more created by the dayMaxEvents option.

This value can be either a Content or a function that returns content:

function (arg) {
  // return Content
}

arg is an object with the following properties:

num

The number of hidden events

text

The default text like +2 more

noEventsClick

  • Type function
  • Default undefined

Callback function that is triggered when the user clicks No events area in list view.

function (info) { }

info is an object with the following properties:

jsEvent

JavaScript native event object with low-level information such as click coordinates

view

The current View object

noEventsContent

  • Type Content or function
  • Default 'No events'

Defines the text that is displayed in list view when there are no events to display.

This value can be either a Content or a function that returns content:

function () {
  // return Content
}

nowIndicator

  • Type boolean
  • Default false

Enables a marker indicating the current time in timeGrid/resourceTimeGrid views.

pointer

  • Type boolean
  • Default false
  • Requires Interaction plugin

Enables mouse cursor pointer in timeGrid/resourceTimeGrid and other views.

resources

  • Type array
  • Default []

Array of plain objects that will be parsed into Resource objects for displaying in the resource view.

resourceLabelContent

  • Type string, objector function
  • Default undefined

Defines the content that is rendered inside an element with a resource title.

This value can be either a Content or a function that returns content:

function (info) {
    // return Content
}

info is an object with the following properties:

resource

The associated Resource object

date

If it is a column that is within a specific date, this will be a Date object

resourceLabelDidMount

  • Type function
  • Default undefined

Callback function that is triggered right after the element has been added to the DOM. If the resource data changes, this is not called again.

function (info) { }

info is an object with the following properties:

el

The HTML element for the label

resource

The associated Resource object

date

If it is a column that is within a specific date, this will be a Date object

select

  • Type function
  • Default undefined
  • Requires Interaction plugin

Callback function that is triggered when a date/time selection is made.

function (info) { }

info is an object with the following properties:

start

JavaScript Date object indicating the start of the selection

end

JavaScript Date object indicating the end of the selection

startStr

ISO8601 string representation of the start date

endStr

ISO8601 string representation of the end date

allDay

true or false. Determines if the selection has occurred in the all-day slot

jsEvent

JavaScript native event object with low-level information such as click coordinates

view

The current View object

resource

If the current view is a resource view, the Resource object that was selected

selectable

  • Type boolean
  • Default false
  • Requires Interaction plugin

Determines whether the user is allowed to highlight multiple days or time slots by clicking and moving the pointer.

selectBackgroundColor

  • Type string
  • Default undefined
  • Requires Interaction plugin

Sets the background color for the event indicating the current selection. See selectable.

You can use any of the CSS color formats such '#f00', '#ff0000', 'rgb(255,0,0)', or 'red'.

selectLongPressDelay

  • Type integer
  • Default undefined
  • Requires Interaction plugin

For touch devices, the amount of time (in milliseconds) the user must hold down a tap before the date becomes selectable.

If not specified, it falls back to longPressDelay.

selectMinDistance

  • Type integer
  • Default 5
  • Requires Interaction plugin

Defines how many pixels the user’s mouse must move before the selection begins.

scrollTime

  • Type string, integer or object
  • Default '06:00:00'

Determines how far forward the scroll pane is initially scrolled.

This should be a value that can be parsed into a Duration object.

slotDuration

  • Type string, integer or object
  • Default '00:30:00'

Views override the default value as follows:

  • resourceTimelineMonth {days: 1}

Defines the frequency for displaying time slots.

This should be a value that can be parsed into a Duration object.

slotEventOverlap

  • Type boolean
  • Default true

Determines whether events in the timeGrid/resourceTimeGrid views should visually overlap when they intersect in time.

If set to false, then intersecting events will be placed next to each other.

slotHeight

  • Type integer
  • Default 24

Defines the time slot height in pixels in the timeGrid/resourceTimeGrid views. When changing the setting, you must additionally override the following CSS styles:

.ec-time-grid .ec-time, .ec-time-grid .ec-line {
  height: 24px;  /* override this value */
}

slotLabelFormat

  • Type object or function
  • Default {hour: 'numeric', minute: '2-digit'}

Defines the text that will be displayed within a time slot.

This value can be either an object with options for the native JavaScript Intl.DateTimeFormat object, or a callback function that returns a Content with the formatted string:

function (time) {
  // return Content with the formatted time string
}

time

JavaScript Date object that needs to be formatted

slotMaxTime

  • Type string, integer or object
  • Default '24:00:00'

Defines the last time slot that will be displayed for each day.

This should be a value that can be parsed into a Duration object.

slotMinTime

  • Type string, integer or object
  • Default '00:00:00'

Defines the first time slot that will be displayed for each day.

This should be a value that can be parsed into a Duration object.

slotWidth

  • Type integer
  • Default 72

Defines the time slot width in pixels in ResourceTimeline views. When changing the setting, you must additionally override the following CSS styles:

.ec-timeline .ec-time, .ec-timeline .ec-line {
  width: 72px;  /* override this value */
}

theme

  • Type object or function
  • Default {allDay: 'ec-all-day', active: 'ec-active', bgEvent: 'ec-bg-event', bgEvents: 'ec-bg-events', body: 'ec-body', button: 'ec-button', buttonGroup: 'ec-button-group', calendar: 'ec', compact: 'ec-compact', container: 'ec-container', content: 'ec-content', day: 'ec-day', dayHead: 'ec-day-head', dayFoot: 'ec-day-foot', days: 'ec-days', daySide: 'ec-day-side', draggable: 'ec-draggable', dragging: 'ec-dragging', event: 'ec-event', eventBody: 'ec-event-body', eventTag: 'ec-event-tag', eventTime: 'ec-event-time', eventTitle: 'ec-event-title', events: 'ec-events', expander: 'ec-expander', extra: 'ec-extra', ghost: 'ec-ghost', handle: 'ec-handle', header: 'ec-header', hiddenScroll: 'ec-hidden-scroll', highlight: 'ec-highlight', icon: 'ec-icon', line: 'ec-line', lines: 'ec-lines', main: 'ec-main', noEvents: 'ec-no-events', nowIndicator: 'ec-now-indicator', otherMonth: 'ec-other-month', pointer: 'ec-pointer', popup: 'ec-popup', preview: 'ec-preview', resizer: 'ec-resizer', resizingX: 'ec-resizing-x', resizingY: 'ec-resizing-y', resource: 'ec-resource', selecting: 'ec-selecting', sidebar: 'ec-sidebar', sidebarTitle: 'ec-sidebar-title', today: 'ec-today', time: 'ec-time', times: 'ec-times', title: 'ec-title', toolbar: 'ec-toolbar', view: 'ec-timeline ec-resource-week-view', weekdays: ['ec-sun', 'ec-mon', 'ec-tue', 'ec-wed', 'ec-thu', 'ec-fri', 'ec-sat'], withScroll: 'ec-with-scroll', uniform: 'ec-uniform'}

Views override the default value as follows:

  • dayGridMonth theme => ({...theme, view: 'ec-day-grid ec-month-view'})
  • listDay theme => ({...theme, view: 'ec-list ec-day-view'})
  • listMonth theme => ({...theme, view: 'ec-list ec-month-view'})
  • listWeek theme => ({...theme, view: 'ec-list ec-week-view'})
  • listYear theme => ({...theme, view: 'ec-list ec-year-view'})
  • resourceTimeGridDay theme => ({...theme, view: 'ec-time-grid ec-resource-day-view'})
  • resourceTimeGridWeek theme => ({...theme, view: 'ec-time-grid ec-resource-week-view'})
  • resourceTimelineDay theme => ({...theme, view: 'ec-timeline ec-resource-day-view'})
  • resourceTimelineMonth theme => ({...theme, view: 'ec-timeline ec-resource-month-view'})
  • resourceTimelineWeek theme => ({...theme, view: 'ec-timeline ec-resource-week-view'})
  • timeGridDay theme => ({...theme, view: 'ec-time-grid ec-day-view'})
  • timeGridWeek theme => ({...theme, view: 'ec-time-grid ec-week-view'})

Defines the CSS classes that the Event Calendar uses to generate HTML markup.

This value can be either a plain object with all necessary properties, or a callback function that receives default theme object and should return a new one:

function (theme) {
  // return actual theme object
}

theme

An object with default CSS classes

titleFormat

  • Type object or function
  • Default {year: 'numeric', month: 'short', day: 'numeric'}

Views override the default value as follows:

  • dayGridMonth {year: 'numeric', month: 'long'}
  • timeGridDay {year: 'numeric', month: 'long', day: 'numeric'}

Defines the text that is displayed in the header toolbar’s title.

This value can be either an object with options for the native JavaScript Intl.DateTimeFormat object, or a callback function that returns a Content with the formatted string:

function (start, end) {
  // return Content with the formatted date string
}

start

JavaScript Date object containing the beginning of the time span to be formatted

end

JavaScript Date object containing the end of the time span to be formatted

unselect

  • Type function
  • Default undefined
  • Requires Interaction plugin

Callback function that is triggered when the current selection is cleared.

A selection can be cleared for a number of reasons:

  • The user clicks away from the current selection (this does not happen when unselectAuto is false).
  • The user makes a new selection. The unselect callback will be fired before the new selection occurs.
  • The user navigates forward or backward in the current view, or switches to a new view.
  • The unselect method is called via the API.
function (info) { }

info is an object with the following properties:

jsEvent

JavaScript native event object with low-level information such as click coordinates.

If unselect has been triggered via the unselect method, jsEvent will be undefined

view

The current View object

unselectAuto

  • Type boolean
  • Default true
  • Requires Interaction plugin

Determines whether clicking elsewhere on the page will clear the current selection. See selectable.

unselectCancel

  • Type string
  • Default ''
  • Requires Interaction plugin

A CSS selector that specifies elements that will ignore the unselectAuto option.

Clicking on elements that match this CSS selector will prevent the current selection from being cleared (because of the unselectAuto option).

view

  • Type string
  • Default 'resourceTimeGridWeek'

The view that is displayed in the calendar. Can be 'dayGridMonth', 'listDay', 'listWeek', 'listMonth', 'listYear', 'resourceTimeGridDay', 'resourceTimeGridWeek', 'resourceTimelineDay', 'resourceTimelineWeek', 'resourceTimelineMonth', 'timeGridDay' or 'timeGridWeek'.

viewDidMount

  • Type function
  • Default undefined

Callback function that is triggered right after the view has been added to the DOM.

function (info) { }

info is an object with the following properties:

view

The mounted View object

views

  • Type object
  • Default {}

You can specify options that apply only to specific views. To do so provide separate options objects within the views option, keyed by the name of the view.

Methods

Methods allow you to manipulate the Event Calendar after initialization. They are accessible from the calendar instance.

In Svelte, methods are available from a component instance:

<script>
    import Calendar from '@event-calendar/core';
    import TimeGrid from '@event-calendar/time-grid';

    let ec;
    let plugins = [TimeGrid];
    let options = {
        view: 'timeGridWeek',
        eventSources: [{events: function() {
            console.log('fetching...');
            return [];
        }}]
    };

    function invokeMethod() {
        ec.refetchEvents();
    }
</script>

<button on:click={invokeMethod}>Refetch events</button>
<Calendar bind:this={ec} {plugins} {options} />

getOption( name )

  • Parameters
    • name string The option name
  • Return value mixed or undefined

This method allows you to get the current value of any calendar option.

// E.g. Get current date
let date = ec.getOption('date');

setOption( name, value )

  • Parameters
    • name string The option name
    • value mixed The new option value
  • Return value EventCalendar The calendar instance for chaining

This method allows you to set new value to any calendar option.

// E.g. Change the current date
ec.setOption('date', new Date());

addEvent( event )

  • Parameters
    • event object A plain object that will be parsed into an Event object
  • Return value Event object or null

Adds a new event to the calendar.

getEventById( id )

  • Parameters
    • id string|integer The ID of the event
  • Return value Event object or null

Returns a single event with the matching id.

getEvents()

  • Return value Event[] Array of Event objects

Returns an array of events that the calendar has in memory.

removeEventById( id )

  • Parameters
    • id string|integer The ID of the event
  • Return value EventCalendar The calendar instance for chaining

Removes a single event with the matching id.

updateEvent( event )

  • Parameters
    • event object A plain object or Event object
  • Return value EventCalendar The calendar instance for chaining

Updates a single event with the matching event.id.

refetchEvents()

  • Return value EventCalendar The calendar instance for chaining

Refetches events from all sources.

dateFromPoint( x, y )

  • Return value object or null

Returns an info object with data as if the dateClick event had fired for that point.

info object contains the following properties:

date

JavaScript Date object for the date and time

allDay

true or false. Determines if the point is in the all-day slot. Month and list views are also considered as all-day slots

dayEl

HTML element that represents the whole-day that contains the point

resource

If the current view is a resource view, the Resource object that owns this date

Using this method, you can, for example, find out on which day a click occurred inside a multi-day event. To do this, inside eventClick, pass the jsEvent.clientX and jsEvent.clientY coordinates to dateFromPoint and get the desired date.

destroy()

  • Return value undefined
  • Not available in Svelte

Destroys the calendar, removing all DOM elements, event handlers, and internal data.

Please note that this method is not available in Svelte. Instead, the calendar is destroyed gracefully when the component containing it is destroyed.

getView()

  • Return value View

Returns the View object for the current view.

next()

  • Return value EventCalendar The calendar instance for chaining

Moves the current calendar date forward by 1 day/week/month (depending on the current view).

prev()

  • Return value EventCalendar The calendar instance for chaining

Moves the current calendar date backward by 1 day/week/month (depending on the current view).

unselect()

  • Return value EventCalendar The calendar instance for chaining

Clears the current selection. See selectable.

Content

The content value can be presented in the following forms:

  • a string containing text 'some text'
  • an object containing the HTML string {html: '<p>some HTML</p>'}
  • an object containing an array of DOM nodes {domNodes: [node1, node2, ...]}

Event object

This is a JavaScript object that the Event Calendar uses to store information about a calendar event.

Here are all properties that exist in Event object:

id

A unique string identifier of the event

resourceIds

An array of resource IDs that the event is associated with

allDay

true or false. Determines if the event is shown in the all-day slot

start

JavaScript Date object holding the event’s start time

end

JavaScript Date object holding the event’s end time

title

Content The text appearing on the event. See Content

editable

true, false or undefined. The value overriding the editable setting for this specific event

startEditable

true, false or undefined. The value overriding the eventStartEditable setting for this specific event

durationEditable

true, false or undefined. The value overriding the eventDurationEditable setting for this specific event

display

The rendering type of the event. Can be 'auto' or 'background'

In addition, in your callback functions, you may get the 'ghost', 'preview' and 'pointer' for this property, which are internal values and are used, for example, to display events during drag-and-drop operations

backgroundColor

The eventBackgroundColor override for this specific event

textColor

The eventTextColor override for this specific event

classNames

An array of additional CSS classes for this specific event

styles

An array of additional inline styling declarations for this specific event

extendedProps

A plain object holding miscellaneous properties specified during parsing in the explicitly given extendedProps field

Parsing event from a plain object

When Event Calendar receives an array of plain event’s objects either from the events option or as a result of an HTTP request to a URL of an event source, it parses the input objects into proper Event objects.

Here are all admissible fields for the event’s input object:

id

string or integer A unique identifier of the event. Default auto-generated value

allDay

boolean Determines if the event is shown in the all-day slot. Defaults to true if start and end are both passed without a time part, false otherwise

start

string or Date This should be either an ISO8601 datetime string like '2022-12-31 09:00:00', or a JavaScript Date object holding the event’s start time

end

string or Date This should be either an ISO8601 datetime string like '2022-12-31 13:00:00', or a JavaScript Date object holding the event’s end time

title

Content The text that will appear on the event. See Content. Default ''

editable

boolean Overrides the master editable option for this single event. Default undefined

startEditable

boolean Overrides the master eventStartEditable option for this single event. Default undefined

durationEditable

boolean Overrides the master eventDurationEditable option for this single event. Default undefined

resourceIds or resourceId

string, integer or array An ID of a resource or an array of resource IDs that the event is associated with. Default []

display

string The rendering type of the event. Can be 'auto' or 'background'. Default 'auto'

backgroundColor

string Sets the event’s background color just like the calendar-wide eventBackgroundColor option. Default undefined

textColor

string Sets the event’s text color just like the calendar-wide eventTextColor option. Default undefined

color

string This is currently an alias for the backgroundColor field. Default undefined

classNames or className

string or array Sets additional CSS classes for this single event. See eventClassNames. Default []

styles or style

string or array Sets additional inline styling declarations for this single event. This value can be either a string containing styles 'font-size: 24px; border-radius: 4px; ...' or an array of strings ['font-size: 24px', 'border-radius: 4px', ...]. Default []

extendedProps

object A plain object with any miscellaneous properties. It will be directly transferred to the extendedProps property of the Event object. Default {}

Duration object

This is a JavaScript object that the Event Calendar uses to store information about a period of time, like 30 minutes or 1 day and 6 hours.

Here are all properties that exist in Duration object:

years

The number of years in duration

months

The number of months in duration

days

The number of days in duration

seconds

The number of seconds in duration. If you want hours and minutes, you need to do division on this property

inWeeks

Determines whether the duration represents a time period in weeks. This value is set during parsing the input data

Parsing duration from input values

When Event Calendar receives a value for options like duration, scrollTime, slotDuration and others, it parses it into a proper Duration object.

The admissible input value can be specified in one of three formats:

  • an object with any of the following keys: year, years, month, months, day, days, minute, minutes, second, seconds
  • a string in the format hh:mm:ss or hh:mm. For example, '05:00' specifies 5 hours
  • an integer specifying the total number of seconds

Resource object

This is a JavaScript object that the Event Calendar uses to store information about a resource. Calendar events can be associated with resources and displayed separately using the resource view.

Here are all properties that exist in Resource object:

id

The unique string identifier for the resource

title

The title of the resource. See Content

eventBackgroundColor

Default background color for this resource's events

eventTextColor

Default text color for this resource's events

extendedProps

A plain object holding miscellaneous properties specified during parsing in the explicitly given extendedProps field

Parsing resource from a plain object

When Event Calendar receives an array of plain resource’s objects for the resources option, it parses the input objects into proper Resource objects.

Here are all admissible fields for the resource’s input object:

id

integer or string Uniquely identifies the resource. Event objects with a corresponding resourceIds field will be linked to this resource. Will be coerced into a string

title

Content Text that will be displayed on the resource when it is rendered. See Content. Default ''

eventBackgroundColor

string Sets the default background color for this resource's events just like the calendar-wide eventBackgroundColor option. Default undefined

eventTextColor

string Sets the default text color for this resource's events just like the calendar-wide eventTextColor option. Default undefined

extendedProps

object A plain object with any miscellaneous properties. It will be directly transferred to the extendedProps property of the Resource object. Default {}

children

Nested resources. See below

The timeline views support displaying nested resources. Nested resources can be collapsed or expanded using an additional button that appears before the parent resource name. To pass nested resources, use the children field:

resources: [
  {
    id: 1,
    title: 'Resource A',
    children: [
      {
        id: 11,
        title: 'Resource A1'
      },
      {
        id: 12,
        title: 'Resource A2'
      }
    ]
  }
]

View object

A View object contains information about a calendar view, such as title and date range.

Here are all properties that exist in View object:

type

Name of the view

title

Title text that is displayed at the top of the header toolbar

currentStart

JavaScript Date that is the start of the interval the view is trying to represent. For example, in month view, this will be the first day of the month. This value disregards hidden days

currentEnd

JavaScript Date that is the end of the interval the view is trying to represent. Note: This value is exclusive. For example, in month view, this will be the day after the last day of the month. This value disregards hidden days

activeStart

JavaScript Date that is the first visible day. In month view, this value is often before the 1st day of the month, because most months do not begin on the first day-of-week

activeEnd

JavaScript Date that is the last visible day. Note: This value is exclusive

Theming

The library provides a built-in dark theme. You can activate it by adding the ec-dark CSS class to any parent element of the calendar, e.g. <body class="ec-dark">.

If you want the dark theme to be activated automatically based on the preferred color scheme, then use the ec-auto-dark CSS class instead.

Please note that the dark theme does not change the background and font color in the calendar. These are assumed to be set by the page styles, and the calendar inherits these styles.

If you do need to set the background or font color of the calendar, use local CSS variables for this:

.ec {
  --ec-bg-color: #22272e;
  --ec-text-color: #adbac7;
}

A list of all available CSS variables can be found here.

Browser support

The latest versions of Chrome, Firefox, Safari, and Edge are supported.

The library is compiled to support browsers that match the following browserslist configuration: defaults and supports fetch. You can see the resulting list here.

Keywords

FAQs

Package last updated on 18 Dec 2024

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