@event-calendar/core
Advanced tools
See demo.
Full-sized drag & drop JavaScript event calendar with resource view:
Inspired by FullCalendar, implements similar options.
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-time-grid@event-calendar/time-grid@event-calendar/interaction (doesn't provide a view)Then, in your Svelte component, use the calendar something 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} />
Or in ES6 module:
import Calendar from '@event-calendar/core';
import TimeGrid from '@event-calendar/time-grid';
let ec = new Calendar({
target: document.getElementById('ec'),
props: {
plugins: [TimeGrid],
options: {
view: 'timeGridWeek',
events: [
// your list of events
]
}
}
});
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/event-calendar.min.css">
<script src="https://cdn.jsdelivr.net/npm/@event-calendar/build/event-calendar.min.js"></script>
If you don't need IE11 support, you can use the
modernversion of the bundle instead:event-calendar-modern.min.cssandevent-calendar-modern.min.js. The lack of IE11 support makes the bundle ~1.5 times smaller.
Then initialize the calendar with something like this:
let ec = new EventCalendar(document.getElementById('ec'), {
view: 'timeGridWeek',
events: [
// your list of events
]
});
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} />
object{today: 'today', dayGridMonth: 'month', listDay: 'list', listWeek: 'list', listMonth: 'list', listYear: 'list', resourceTimeGridDay: 'day', resourceTimeGridWeek: 'week', timeGridDay: 'day', timeGridWeek: 'week'}Text that is displayed in buttons of the header toolbar.
Date or stringnew 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'.
functionundefinedCallback function that is triggered when the user clicks on a date or a time.
function (dateClickInfo) {}
dateClickInfo is an object with the following properties:
|
| JavaScript Date object for the clicked date and time |
|
| ISO8601 string representation of the date |
|
| HTML element that represents the whole-day that was clicked on |
|
| JavaScript native event object with low-level information such as click coordinates |
|
|
The current View object |
|
|
If the current view is a resource view, the Resource object that owns this date |
booleanfalseDetermines whether the resource view should render the date headings above the resource headings.
functionundefinedCallback 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:
|
| JavaScript Date object for the beginning of the range the calendar needs events for |
|
| JavaScript Date object for the end of the range the calendar needs events for. Note: This value is exclusive |
|
| ISO8601 string representation of the start date |
|
| ISO8601 string representation of the end date |
|
|
The current View object |
object or function{weekday: 'short', month: 'numeric', day: 'numeric'}Views override the default value as follows:
- dayGridMonth
{weekday: 'short'}- 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 formatted string:
function (date) {
// return formatted date string
}
|
| JavaScript Date object that needs to be formatted |
booleanfalseDetermines 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.
object or function{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 formatted string:
booleantrueViews override the default value as follows:
- dayGridMonth
false
Determines whether to display an event’s end time.
booleantrueDetermines whether the calendar should automatically scroll during the event drag-and-drop when the mouse crosses the edge.
string, integer or object{weeks: 1}Views override the default value as follows:
- dayGridMonth
{months: 1}- listDay
{days: 1}- listWeek
{weeks: 1}- listMonth
{months: 1}- listYear
{years: 1}- resourceTimeGridDay
{days: 1}- resourceTimeGridWeek
{weeks: 1}- timeGridDay
{days: 1}- timeGridWeek
{weeks: 1}
Sets the duration of a view.
This should be a value that can be parsed into a Duration object.
booleanfalseDetermines whether the events on the calendar can be dragged and resized (both at the same time).
Currently, only dragging is supported. See eventStartEditable.
Array[]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.
stringundefinedSets 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'.
functionundefinedCallback function that is triggered when the user clicks an event.
function (eventClickInfo) { }
eventClickInfo is an object with the following properties:
|
| The HTML element for the event |
|
|
The associated Event object |
|
| JavaScript native event object with low-level information such as click coordinates |
|
|
The current View object |
stringundefinedThis is currently an alias for the eventBackgroundColor.
string, objector functionundefinedDefines the content that is rendered inside an event’s element.
This value can be either a string containing HTML '<p>...</p>', an object containing the HTML string {html: '<p>...</p>'}, an object containing an array of DOM nodes {domNodes: [node1, node2, ...]} or a function that returns any of the above formats:
function (eventInfo) {
// return string or object
}
eventInfo is an object with the following properties:
|
|
The associated Event object |
|
| Formatted time of the event |
|
|
The current View object |
functionundefinedCallback 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 (mountInfo) { }
mountInfo is an object with the following properties:
|
| The HTML element for the event |
|
|
The associated Event object |
|
| Formatted time of the event |
|
|
The current View object |
integer5Defines how many pixels the user’s mouse must move before the event dragging begins.
functionundefinedCallback function that is triggered when the event dragging begins.
function (info) { }
info is an object with the following properties:
|
|
The associated Event object |
|
| JavaScript native event object with low-level information such as click coordinates |
|
|
The current View object |
functionundefinedCallback 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:
|
|
The associated Event object |
|
| JavaScript native event object with low-level information such as click coordinates |
|
|
The current View object |
functionundefinedCallback 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:
|
|
The associated Event object |
|
|
An Event object that holds information about the event before the drop |
|
|
If the resource has changed, this is the Resource object the event came from. If the resource has not changed, this will be undefined |
|
|
If the resource has changed, this is the Resource object the event went to. If the resource has not changed, this will be undefined |
|
|
A Duration object that represents the amount of time the event was moved by |
|
|
A function that, if called, reverts the event’s start/end date to the values before the drag |
|
| JavaScript native event object with low-level information such as click coordinates |
|
|
The current View object |
functionundefinedCallback function that is triggered when the user hovers over an event with the cursor (mouse pointer).
function (mouseEnterInfo) { }
mouseEnterInfo is an object with the following properties:
|
| The HTML element for the event |
|
|
The associated Event object |
|
| JavaScript native event object with low-level information such as click coordinates |
|
|
The current View object |
functionundefinedCallback function that is triggered when the cursor (mouse pointer) is moved out of an event.
function (mouseLeaveInfo) { }
mouseLeaveInfo is an object with the following properties:
|
| The HTML element for the event |
|
|
The associated Event object |
|
| JavaScript native event object with low-level information such as click coordinates |
|
|
The current View object |
EventSource[][]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:
|
|
A URL that the calendar will fetch Event objects from |
|
|
HTTP request method. Default |
|
|
Other GET/POST data you want to send to the server. Can be a plain object or a function that returns an object. Default |
|
|
A custom function that is executed whenever the Event Calendar needs new event data.
The If there is any failure (e.g., if an AJAX request fails), then call the Instead of calling |
booleantrueDetermines whether the events on the calendar can be dragged.
object or function{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 formatted string:
function (time) {
// return formatted time string
}
|
| JavaScript Date object that needs to be formatted |
booleanfalseDetermines whether resources with no events for the current range should be hidden in the resource view.
integer0The day that each week begins at, where Sunday is 0, Monday is 1, etc. Saturday is 6.
booleanfalseDetermines whether slotMinTime and slotMaxTime should automatically expand when an event goes out of bounds.
object{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:
|
| A text containing the current month/week/day |
|
| A button for moving the calendar back one month/week/day |
|
| A button for moving the calendar forward one month/week/day |
|
| A button for moving the calendar to the current month/week/day |
|
a view name like | A button that will switch the calendar to a specific view |
string'auto'Defines the height of the entire calendar.
This should be a valid CSS value like '100%' or '600px'.
Array[]Exclude certain days-of-the-week from being displayed, where Sunday is 0, Monday is 1, etc. Saturday is 6.
Array[]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.
booleantrueDetermines 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).
object or function{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 formatted string:
function (date) {
// return formatted date string
}
|
| JavaScript Date object that needs to be formatted |
object or function{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 formatted string:
function (date) {
// return formatted date string
}
|
| JavaScript Date object that needs to be formatted |
functionundefinedCallback function that is triggered when event fetching starts/stops.
function (isLoading) { }
|
|
|
stringundefinedDefines 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.
booleanfalseViews override the default value as follows:
- dayGridMonth
true
Tells the calendar that visible dates should start from the firstDay of the week, even if it will display days outside the current range (this is a common case for a month calendar when you can see days from adjacent months).
string, objector functionundefinedDefines the text that is displayed instead of the default +2 more created by the dayMaxEvents option.
This value can be either a string containing HTML '<p>...</p>', an object containing the HTML string {html: '<p>...</p>'}, an object containing an array of DOM nodes {domNodes: [node1, node2, ...]} or a function that returns any of the above formats:
function (arg) {
// return string or object
}
arg is an object with the following properties:
|
| The number of hidden events |
|
|
The default text like |
functionundefinedCallback function that is triggered when the user clicks No events area in list view.
function (clickInfo) { }
clickInfo is an object with the following properties:
|
| JavaScript native event object with low-level information such as click coordinates |
|
|
The current View object |
string, objector function'No events'Defines the text that is displayed in list view when there are no events to display.
This value can be either a string containing HTML '<p>...</p>', an object containing the HTML string {html: '<p>...</p>'}, an object containing an array of DOM nodes {domNodes: [node1, node2, ...]} or a function that returns any of the above formats:
function () {
// return string or object
}
booleanfalseEnables a marker indicating the current time in timeGrid/resourceTimeGrid views.
booleanfalseEnables mouse cursor pointer in timeGrid/resourceTimeGrid views.
Array[]Array of plain objects that will be parsed into Resource objects for displaying in the resource view.
string, integer or object'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.
string, integer or object'00:30:00'Defines the frequency for displaying time slots.
This should be a value that can be parsed into a Duration object.
integer24Defines the time slot height in pixels. When changing the setting, you must additionally override the following CSS styles:
.ec-time, .ec-line {
height: 24px; /* override this value */
}
object or function{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 formatted string:
function (time) {
// return formatted time string
}
|
| JavaScript Date object that needs to be formatted |
string, integer or object'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.
string, integer or object'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.
object or function{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', content: 'ec-content', day: 'ec-day', dayHead: 'ec-day-head', days: 'ec-days', event: 'ec-event', eventTime: 'ec-event-time', eventTitle: 'ec-event-title', events: 'ec-events', extra: 'ec-extra', handle: 'ec-handle', header: 'ec-header', hiddenScroll: 'ec-hidden-scroll', hiddenTimes: 'ec-hidden-times', highlight: 'ec-highlight', icon: 'ec-icon', line: 'ec-line', lines: 'ec-lines', nowIndicator: 'ec-now-indicator', otherMonth: 'ec-other-month', sidebar: 'ec-sidebar', today: 'ec-today', time: 'ec-time', title: 'ec-title', toolbar: 'ec-toolbar', week: 'ec-week', withScroll: 'ec-with-scroll', uniform: 'ec-uniform', dayFoot: 'ec-day-foot', month: 'ec-month', popup: 'ec-popup', daySide: 'ec-day-side', eventTag: 'ec-event-tag', list: 'ec-list', noEvents: 'ec-no-events', resource: 'ec-resource', resourceTitle: 'ec-resource-title', draggable: 'ec-draggable', ghost: 'ec-ghost', preview: 'ec-preview', pointer: 'ec-pointer'}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 an actual one:
function (theme) {
// return actual theme object
}
|
| An object with default CSS classes |
object or function{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 formatted string:
function (date) {
// return formatted date string
}
|
| JavaScript Date object that needs to be formatted |
string'resourceTimeGridWeek'The view that is displayed in the calendar. Can be 'dayGridMonth', 'listDay', 'listWeek', 'listMonth', 'listYear', 'resourceTimeGridDay', 'resourceTimeGridWeek', 'timeGridDay' or 'timeGridWeek'.
functionundefinedCallback function that is triggered right after the view has been added to the DOM.
function (mountInfo) { }
mountInfo is an object with the following properties:
|
|
The mounted View object |
object{}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 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} />
name string The option namemixed or undefinedThis method allows you to get the current value of any calendar option.
// E.g. Get current date
let date = ec.getOption('date');
name string The option namevalue mixed The new option valueEventCalendar The calendar instance for chainingThis method allows you to set new value to any calendar option.
// E.g. Change the current date
ec.setOption('date', new Date());
id string|integer The ID of the eventnullReturns a single event with the matching id.
id string|integer The ID of the eventEventCalendar The calendar instance for chainingRemoves a single event with the matching id.
event object A plain object that will be parsed into an Event objectnullAdds a new event to the calendar.
event object A plain object or Event objectEventCalendar The calendar instance for chainingUpdates a single event with the matching event.id.
EventCalendar The calendar instance for chainingRefetches events from all sources.
ViewReturns the View object for the current view.
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:
|
| A unique string identifier of the event |
|
| An array of resource IDs that the event is associated with |
|
| JavaScript Date object holding the event’s start time |
|
| JavaScript Date object holding the event’s end time |
|
| The text appearing on the event |
|
|
Boolean ( |
|
|
Boolean ( |
|
|
The rendering type of the event. Can be In addition, in your callback functions, you may get the |
|
|
The eventBackgroundColor override for this specific event |
|
|
A plain object holding miscellaneous properties specified during parsing in the explicitly given |
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:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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:
|
| The number of years in duration |
|
| The number of months in duration |
|
| The number of days in duration |
|
| The number of seconds in duration. If you want hours and minutes, you need to do division on this property |
|
| Determines whether the duration represents a time period in weeks. This value is set during parsing the input data |
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:
year, years, month, months, day, days, minute, minutes, second, secondshh:mm:ss or hh:mm. For example, '05:00' specifies 5 hoursThis 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:
|
| The unique string identifier for the resource |
|
| The title of the resource |
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:
|
|
|
|
|
|
A View object contains information about a calendar view, such as title and date range.
Here are all properties that exist in View object:
|
| Name of the view |
|
| Title text that is displayed at the top of the header toolbar |
|
| 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 |
|
| 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 |
|
| 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 |
|
| JavaScript Date that is the last visible day. Note: This value is exclusive |
FAQs
Full-sized drag & drop event calendar with resource & timeline views
The npm package @event-calendar/core receives a total of 3,020 weekly downloads. As such, @event-calendar/core popularity was classified as popular.
We found that @event-calendar/core demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 0 open source maintainers collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
Research
Socket researchers have discovered malicious npm packages targeting crypto developers, stealing credentials and wallet data using spyware delivered through typosquats of popular cryptographic libraries.
Security News
Socket's package search now displays weekly downloads for npm packages, helping developers quickly assess popularity and make more informed decisions.
Security News
A Stanford study reveals 9.5% of engineers contribute almost nothing, costing tech $90B annually, with remote work fueling the rise of "ghost engineers."