V7 JavaScript API Migration Guide

This document will help you migrate from v6 of the API to v7. It centers around JS settings that must be changed. If you’ve written custom CSS, see the CSS migration guide instead.

Before You Begin

Components in Examples

Many examples show React component pseudo-code with the <FullCalendar> element. Please adapt these examples to Vue or Angular, minding the way FullCalendar treats components and component props for each library.

clsx

Many migrations in this document show the merging of multiple class-names with the clsx utility. It’s especially important for conditional class-names. Installation:

npm install --save clsx

In the JS:

import clsx from 'clsx'

const bool = true
clsx('you', 'can', 'merge', bool && 'okay?') // "you can merge okay?"

React

React Standard Packages

Breaking: dependency changes:

@fullcalendar/core removed as a peer dependency
@fullcalendar/daygrid and many other packages removed and moved to @fullcalendar/react/* entrypoints (see package.json below)
temporal-polyfill added as a peer dependency

1) So, your package.json should be modified:

{
  "dependencies": {
-   "@fullcalendar/react": "^6.1.20",
+   "@fullcalendar/react": "7@beta",
-   "@fullcalendar/core": "^6.1.20",
-   "@fullcalendar/interaction": "^6.1.20",
-   "@fullcalendar/daygrid": "^6.1.20",
-   "@fullcalendar/timegrid": "^6.1.20",
-   "@fullcalendar/list": "^6.1.20",
-   "@fullcalendar/multimonth": "^6.1.20",
  }
}

2) Then install temporal-polyfill:

npm install --save temporal-polyfill

3) In your JS, change your imports:

  import interactionPlugin
-   from '@fullcalendar/interaction'
+   from '@fullcalendar/react/interaction'
  import dayGridPlugin
-   from '@fullcalendar/daygrid'
+   from '@fullcalendar/react/daygrid'
  import timeGridPlugin
-   from '@fullcalendar/timegrid'
+   from '@fullcalendar/react/timegrid'
  import listPlugin
-   from '@fullcalendar/list'
+   from '@fullcalendar/react/list'
  import multiMonthPlugin
-   from '@fullcalendar/multimonth'
+   from '@fullcalendar/react/multimonth'

React Scheduler Packages

Breaking: additional dependency changes for premium (aka “scheduler”):

1) Remove the following packages from your package.json:

{
  "dependencies": {
    "@fullcalendar/react": "7@beta",
    ...
-   "@fullcalendar/resource": "^6.1.20",
-   "@fullcalendar/adaptive": "^6.1.20",
-   "@fullcalendar/scrollgrid": "^6.1.20",
-   "@fullcalendar/timeline": "^6.1.20",
-   "@fullcalendar/resource-timeline": "^6.1.20",
-   "@fullcalendar/resource-timegrid": "^6.1.20"
  }
}

2) Install the @fullcalendar/react-scheduler package:

npm install --save @fullcalendar/react-scheduler@beta

3) In your JS, change your imports:

  import resourcePlugin
-   from '@fullcalendar/resource'
+   from '@fullcalendar/react-scheduler'
  import adaptivePlugin
-   from '@fullcalendar/adaptive'
+   from '@fullcalendar/react-scheduler/adaptive'
  import scrollGridPlugin
-   from '@fullcalendar/scrollgrid'
+   from '@fullcalendar/react-scheduler/scrollgrid'
  import timelinePlugin
-   from '@fullcalendar/timeline'
+   from '@fullcalendar/react-scheduler/timeline'
  import resourceTimelinePlugin
-   from '@fullcalendar/resource-timeline'
+   from '@fullcalendar/react-scheduler/resource-timeline'
  import resourceTimeGridPlugin
-   from '@fullcalendar/resource-timegrid'
+   from '@fullcalendar/react-scheduler/resource-timegrid'

Breaking: FullCalendar no longer bundles its own CSS. Furthermore, the calendar “theme” has been pulled out from the core, as a plugin. Thus, you must import your own stylesheets. This depends on what theme you choose (see themes.fullcalendar.io):

  import FullCalendar from '@fullcalendar/react'
+ import themePlugin from '@fullcalendar/react/themes/classic'
  // import other plugins...
  
  // stylesheets
+ import '@fullcalendar/react/skeleton.css' // ALWAYS NEED SKELETON
+ import '@fullcalendar/react/themes/classic/theme.css' // YOUR THEME
+ import '@fullcalendar/react/themes/classic/palette.css' // YOUR THEME'S PALETTE
  
  <FullCalendar
    plugins={[
+     themePlugin,
      // other plugins here...
    ]}
  />

Remix

Behavior: The Remix framework previously required a hack to explicitly define the DOM-placement for styles, but this is no longer needed. In app/root.tsx:

  function Document({
    children,
    title,
  }: {
    children: React.ReactNode;
    title?: string;
  }) {
    return (
      <html lang="en">
        <head>
          {title ? <title>{title}</title> : null}
          <Meta />
-         <style data-fullcalendar ></style>
          <Links />
        </head>
        <body>
          {children}
          <ScrollRestoration />
          <Scripts />
          <LiveReload />
        </body>
      </html>
    );
  }

Vue

Vue Standard Packages

Breaking: dependency changes:

@fullcalendar/core removed as a peer dependency
@fullcalendar/daygrid and many other packages removed and moved to @fullcalendar/vue3/* entrypoints (see package.json below)
temporal-polyfill added as a peer dependency

1) So, your package.json should be modified:

{
  "dependencies": {
-   "@fullcalendar/vue3": "^6.1.20",
+   "@fullcalendar/vue3": "7@beta",
-   "@fullcalendar/core": "^6.1.20",
-   "@fullcalendar/interaction": "^6.1.20",
-   "@fullcalendar/daygrid": "^6.1.20",
-   "@fullcalendar/timegrid": "^6.1.20",
-   "@fullcalendar/list": "^6.1.20",
-   "@fullcalendar/multimonth": "^6.1.20"
  }
}

2) Then install temporal-polyfill:

npm install --save temporal-polyfill

3) In your JS, change your imports:

  import interactionPlugin
-   from '@fullcalendar/interaction'
+   from '@fullcalendar/vue3/interaction'
  import dayGridPlugin
-   from '@fullcalendar/daygrid'
+   from '@fullcalendar/vue3/daygrid'
  import timeGridPlugin
-   from '@fullcalendar/timegrid'
+   from '@fullcalendar/vue3/timegrid'
  import listPlugin
-   from '@fullcalendar/list'
+   from '@fullcalendar/vue3/list'
  import multiMonthPlugin
-   from '@fullcalendar/multimonth'
+   from '@fullcalendar/vue3/multimonth'

Vue Scheduler Packages

Breaking: additional dependency changes for premium (aka “scheduler”):

1) Remove the following packages from your package.json:

{
  "dependencies": {
    "@fullcalendar/vue3": "7@beta",
    ...
-   "@fullcalendar/resource": "^6.1.20",
-   "@fullcalendar/adaptive": "^6.1.20",
-   "@fullcalendar/scrollgrid": "^6.1.20",
-   "@fullcalendar/timeline": "^6.1.20",
-   "@fullcalendar/resource-timeline": "^6.1.20",
-   "@fullcalendar/resource-timegrid": "^6.1.20"
  }
}

2) Install the @fullcalendar/vue3-scheduler package:

npm install --save @fullcalendar/vue3-scheduler@beta

3) In your JS, change your imports:

  import resourcePlugin
-   from '@fullcalendar/resource'
+   from '@fullcalendar/vue3-scheduler'
  import adaptivePlugin
-   from '@fullcalendar/adaptive'
+   from '@fullcalendar/vue3-scheduler/adaptive'
  import scrollGridPlugin
-   from '@fullcalendar/scrollgrid'
+   from '@fullcalendar/vue3-scheduler/scrollgrid'
  import timelinePlugin
-   from '@fullcalendar/timeline'
+   from '@fullcalendar/vue3-scheduler/timeline'
  import resourceTimelinePlugin
-   from '@fullcalendar/resource-timeline'
+   from '@fullcalendar/vue3-scheduler/resource-timeline'
  import resourceTimeGridPlugin
-   from '@fullcalendar/resource-timegrid'
+   from '@fullcalendar/vue3-scheduler/resource-timegrid'

  <script setup>
    import FullCalendar from '@fullcalendar/vue3'
+   import themePlugin from '@fullcalendar/vue3/themes/classic'
    // import other plugins...
  
    // stylesheets
+   import '@fullcalendar/vue3/skeleton.css' // ALWAYS NEED SKELETON
+   import '@fullcalendar/vue3/themes/classic/theme.css' // YOUR THEME
+   import '@fullcalendar/vue3/themes/classic/palette.css' // YOUR THEME'S PALETTE
  </script>
  
  <template>
    <FullCalendar
      :options="{
        plugins: [
+         themePlugin,
          // other plugins here...
        ],
      }"
    />
  </template>

Angular

Angular Standard Packages

Breaking: dependency changes:

The @fullcalendar/core peer dependency has been renamed fullcalendar
@fullcalendar/daygrid and many other packages removed and moved to @fullcalendar/angular/* entrypoints (see package.json below)
temporal-polyfill added as a peer dependency

1) So, your package.json should be modified:

{
  "dependencies": {
-   "@fullcalendar/angular": "^6.1.20",
+   "@fullcalendar/angular": "7@beta",
-   "@fullcalendar/core": "^6.1.20",
-   "@fullcalendar/interaction": "^6.1.20",
-   "@fullcalendar/daygrid": "^6.1.20",
-   "@fullcalendar/timegrid": "^6.1.20",
-   "@fullcalendar/list": "^6.1.20",
-   "@fullcalendar/multimonth": "^6.1.20"
  }
}

2) Then install the two additional peer dependencies:

npm install --save fullcalendar@beta temporal-polyfill

3) In your JS, change your imports:

  import interactionPlugin
-   from '@fullcalendar/interaction'
+   from '@fullcalendar/angular/interaction'
  import dayGridPlugin
-   from '@fullcalendar/daygrid'
+   from '@fullcalendar/angular/daygrid'
  import timeGridPlugin
-   from '@fullcalendar/timegrid'
+   from '@fullcalendar/angular/timegrid'
  import listPlugin
-   from '@fullcalendar/list'
+   from '@fullcalendar/angular/list'
  import multiMonthPlugin
-   from '@fullcalendar/multimonth'
+   from '@fullcalendar/angular/multimonth'

Angular Scheduler Packages

Breaking: additional dependency changes for premium (aka “scheduler”):

1) Remove the following packages from your package.json:

{
  "dependencies": {
    "@fullcalendar/angular": "7@beta",
    "fullcalendar": "7@beta",
    ...
-   "@fullcalendar/resource": "^6.1.20",
-   "@fullcalendar/adaptive": "^6.1.20",
-   "@fullcalendar/scrollgrid": "^6.1.20",
-   "@fullcalendar/timeline": "^6.1.20",
-   "@fullcalendar/resource-timeline": "^6.1.20",
-   "@fullcalendar/resource-timegrid": "^6.1.20"
  }
}

2) Install the @fullcalendar/angular-scheduler package:

npm install --save @fullcalendar/angular-scheduler@beta

3) In your JS, change your imports:

  import resourcePlugin
-   from '@fullcalendar/resource'
+   from '@fullcalendar/angular-scheduler'
  import adaptivePlugin
-   from '@fullcalendar/adaptive'
+   from '@fullcalendar/angular-scheduler/adaptive'
  import scrollGridPlugin
-   from '@fullcalendar/scrollgrid'
+   from '@fullcalendar/angular-scheduler/scrollgrid'
  import timelinePlugin
-   from '@fullcalendar/timeline'
+   from '@fullcalendar/angular-scheduler/timeline'
  import resourceTimelinePlugin
-   from '@fullcalendar/resource-timeline'
+   from '@fullcalendar/angular-scheduler/resource-timeline'
  import resourceTimeGridPlugin
-   from '@fullcalendar/resource-timegrid'
+   from '@fullcalendar/angular-scheduler/resource-timegrid'

  import { FullCalendarModule } from '@fullcalendar/angular';
  import { FullCalendarModule, CalendarOptions } from '@fullcalendar/angular';
+ import themePlugin from '@fullcalendar/angular/themes/classic'; // YOUR THEME
  // import other plugins...

  export class App {
    calendarOptions = signal<CalendarOptions>({
      plugins: [
+       themePlugin,
        // other plugins here...
      ],
    })

Add the following stylesheets to your angular.json:

  {
    "projects": {        // ...
      "my-project": {    // ...
        "architect": {   // ...
          "build": {     // ...
            "options": { // ...
              "styles": [
+               "@fullcalendar/angular/skeleton.css", // ALWAYS NEED SKELETON
+               "@fullcalendar/angular/themes/classic/theme.css", // YOUR THEME
+               "@fullcalendar/angular/themes/classic/palette.css", // YOUR THEME'S PALETTE
                "src/styles.css"
              ]

Vanilla JS

Vanilla JS Standard Packages

Breaking: dependency changes:

Vanilla JS package @fullcalendar/core renamed to fullcalendar
@fullcalendar/daygrid and many other packages removed and moved to fullcalendar/* entrypoints (see package.json below)
temporal-polyfill added as a peer dependency

1) So, your package.json should be modified:

{
  "dependencies": {
-   "@fullcalendar/core": "^6.1.20",
-   "@fullcalendar/interaction": "^6.1.20",
-   "@fullcalendar/daygrid": "^6.1.20",
-   "@fullcalendar/timegrid": "^6.1.20",
-   "@fullcalendar/list": "^6.1.20",
-   "@fullcalendar/multimonth": "^6.1.20"
  }
}

2) Then install the renamed vanilla JS connector and temporal-polyfill:

npm install --save fullcalendar@beta temporal-polyfill

3) In your JS, change your imports:

  import interactionPlugin
-   from '@fullcalendar/interaction'
+   from 'fullcalendar/interaction' // no @ at the beginning!
  import dayGridPlugin
-   from '@fullcalendar/daygrid'
+   from 'fullcalendar/daygrid' // no @ at the beginning!
  import timeGridPlugin
-   from '@fullcalendar/timegrid'
+   from 'fullcalendar/timegrid' // no @ at the beginning!
  import listPlugin
-   from '@fullcalendar/list'
+   from 'fullcalendar/list' // no @ at the beginning!
  import multiMonthPlugin
-   from '@fullcalendar/multimonth'
+   from 'fullcalendar/multimonth' // no @ at the beginning!

Vanilla JS Scheduler Packages

Breaking: additional dependency changes for premium (aka “scheduler”):

1) Remove the following packages from your package.json:

{
  "dependencies": {
    "fullcalendar": "7@beta",
    ...
-   "@fullcalendar/resource": "^6.1.20",
-   "@fullcalendar/adaptive": "^6.1.20",
-   "@fullcalendar/scrollgrid": "^6.1.20",
-   "@fullcalendar/timeline": "^6.1.20",
-   "@fullcalendar/resource-timeline": "^6.1.20",
-   "@fullcalendar/resource-timegrid": "^6.1.20"
  }
}

2) Install the fullcalendar-scheduler package:

npm install --save fullcalendar-scheduler@beta

3) In your JS, change your imports:

  import resourcePlugin
-   from '@fullcalendar/resource'
+   from 'fullcalendar-scheduler'
  import adaptivePlugin
-   from '@fullcalendar/adaptive'
+   from 'fullcalendar-scheduler/adaptive'
  import scrollGridPlugin
-   from '@fullcalendar/scrollgrid'
+   from 'fullcalendar-scheduler/scrollgrid'
  import timelinePlugin
-   from '@fullcalendar/timeline'
+   from 'fullcalendar-scheduler/timeline'
  import resourceTimelinePlugin
-   from '@fullcalendar/resource-timeline'
+   from 'fullcalendar-scheduler/resource-timeline'
  import resourceTimeGridPlugin
-   from '@fullcalendar/resource-timegrid'
+   from 'fullcalendar-scheduler/resource-timegrid'

- import { Calendar } from '@fullcalendar/core'
+ import { Calendar } from 'fullcalendar'
+ import themePlugin from 'fullcalendar/themes/classic' // YOUR THEME
  // import other plugins...
  
  // stylesheets
+ import 'fullcalendar/skeleton.css'
+ import 'fullcalendar/themes/classic/theme.css' // YOUR THEME
+ import 'fullcalendar/themes/classic/palette.css' // YOUR THEME'S PALETTE
  
  const calendarEl = document.getElementById('calendar')
  const calendar = new Calendar(calendarEl, {
    plugins: [
+     themePlugin,
      // other plugins here...
    ],
  })
  calendar.render()

Global Script Tags

Breaking: index.global.js renamed to all.global.js (which contains “all” standard plugins), and additional scripts/stylesheets must be added for the theme:

  <!-- STANDARD JS -->
- <script src='https://cdn.jsdelivr.net/npm/fullcalendar@6.1.20/index.global.js'></script>
+ <script src='https://cdn.jsdelivr.net/npm/fullcalendar@7.0.0-beta.7/all.global.js'></script>

  <!-- THEME JS -->
+ <script src='https://cdn.jsdelivr.net/npm/fullcalendar@7.0.0-beta.7/themes/classic/global.js'></script>
  
  <!-- STYLESHEETS -->
+ <link href='https://cdn.jsdelivr.net/npm/fullcalendar@7.0.0-beta.7/skeleton.css' rel='stylesheet' />
+ <link href='https://cdn.jsdelivr.net/npm/fullcalendar@7.0.0-beta.7/themes/classic/theme.css' rel='stylesheet' />
+ <link href='https://cdn.jsdelivr.net/npm/fullcalendar@7.0.0-beta.7/themes/classic/palette.css' rel='stylesheet' />

Breaking: Similar breaking changes for scheduler, but with an additional one: scheduler’s JS file no longer contains the standard plugins, so both standard and premium all.global.js files must be included:

  <!-- STANDARD + SCHEDULER JS -->
- <script src='https://cdn.jsdelivr.net/npm/fullcalendar-scheduler@6.1.20/index.global.js'></script>
+ <script src='https://cdn.jsdelivr.net/npm/fullcalendar@7.0.0-beta.7/all.global.js'></script>
+ <script src='https://cdn.jsdelivr.net/npm/fullcalendar-scheduler@7.0.0-beta.7/all.global.js'></script>

  <!-- THEME JS -->
+ <script src='https://cdn.jsdelivr.net/npm/fullcalendar@7.0.0-beta.7/themes/classic/global.js'></script>
  
  <!-- STYLESHEETS -->
+ <link href='https://cdn.jsdelivr.net/npm/fullcalendar@7.0.0-beta.7/skeleton.css' rel='stylesheet' />
+ <link href='https://cdn.jsdelivr.net/npm/fullcalendar@7.0.0-beta.7/themes/classic/theme.css' rel='stylesheet' />
+ <link href='https://cdn.jsdelivr.net/npm/fullcalendar@7.0.0-beta.7/themes/classic/palette.css' rel='stylesheet' />

Web Component

Web Component Standard Packages

Breaking: dependency changes:

@fullcalendar/core removed as a peer dependency
@fullcalendar/daygrid and many other packages removed (see package.json below)
temporal-polyfill added as a peer dependency

1) So, your package.json should be modified:

{
  "dependencies": {
-   "@fullcalendar/web-component": "^6.1.20",
+   "@fullcalendar/web-component": "7@beta",
-   "@fullcalendar/core": "^6.1.20",
-   "@fullcalendar/interaction": "^6.1.20",
-   "@fullcalendar/daygrid": "^6.1.20",
-   "@fullcalendar/timegrid": "^6.1.20",
-   "@fullcalendar/list": "^6.1.20",
-   "@fullcalendar/multimonth": "^6.1.20"
  }
}

2) Then install the upgraded web-component connector and temporal-polyfill:

npm install --save @fullcalendar/web-component@beta temporal-polyfill

3) In your JS, change your imports:

  import interactionPlugin
-   from '@fullcalendar/interaction'
+   from '@fullcalendar/web-component/interaction'
  import dayGridPlugin
-   from '@fullcalendar/daygrid'
+   from '@fullcalendar/web-component/daygrid'
  import timeGridPlugin
-   from '@fullcalendar/timegrid'
+   from '@fullcalendar/web-component/timegrid'
  import listPlugin
-   from '@fullcalendar/list'
+   from '@fullcalendar/web-component/list'
  import multiMonthPlugin
-   from '@fullcalendar/multimonth'
+   from '@fullcalendar/web-component/multimonth'

Web Component Scheduler Packages

Breaking: additional dependency changes for premium (aka “scheduler”):

1) Remove the following packages from your package.json:

{
  "dependencies": {
    "@fullcalendar/web-component": "7@beta",
    ...
-   "@fullcalendar/resource": "^6.1.20",
-   "@fullcalendar/adaptive": "^6.1.20",
-   "@fullcalendar/scrollgrid": "^6.1.20",
-   "@fullcalendar/timeline": "^6.1.20",
-   "@fullcalendar/resource-timeline": "^6.1.20",
-   "@fullcalendar/resource-timegrid": "^6.1.20"
  }
}

2) Install the @fullcalendar/web-component-scheduler package:

npm install --save @fullcalendar/web-component-scheduler@beta

3) In your JS, change your imports:

  import resourcePlugin
-   from '@fullcalendar/resource'
+   from '@fullcalendar/web-component-scheduler'
  import adaptivePlugin
-   from '@fullcalendar/adaptive'
+   from '@fullcalendar/web-component-scheduler/adaptive'
  import scrollGridPlugin
-   from '@fullcalendar/scrollgrid'
+   from '@fullcalendar/web-component-scheduler/scrollgrid'
  import timelinePlugin
-   from '@fullcalendar/timeline'
+   from '@fullcalendar/web-component-scheduler/timeline'
  import resourceTimelinePlugin
-   from '@fullcalendar/resource-timeline'
+   from '@fullcalendar/web-component-scheduler/resource-timeline'
  import resourceTimeGridPlugin
-   from '@fullcalendar/resource-timegrid'
+   from '@fullcalendar/web-component-scheduler/resource-timegrid'

  import '@fullcalendar/web-component/global'
+ import themePlugin from '@fullcalendar/web-component/themes/classic'
  // import other plugins...
  
  // stylesheets
+ import '@fullcalendar/web-component/skeleton.styles'
+ import '@fullcalendar/web-component/themes/classic/theme.styles'
+ import '@fullcalendar/web-component/themes/classic/palette.css'
  
  const fullCalendarElement = document.querySelector('full-calendar')
  fullCalendarElement.options = {
    plugins: [
+     themePlugin,
      // other plugins here...
    ]
  }

<!-- HTML -->
<full-calendar></full-calendar>

Global Script Tags

Breaking: index.global.js renamed to all.global.js (which contains “all” standard plugins), and additional scripts/stylesheets must be added for the theme:

  <!-- STANDARD JS -->
- <script src='https://cdn.jsdelivr.net/npm/@fullcalendar/core@6.1.20/index.global.js'></script>
- <script src='https://cdn.jsdelivr.net/npm/@fullcalendar/web-component@6.1.20/index.global.js'></script>
+ <script src='https://cdn.jsdelivr.net/npm/@fullcalendar/web-component@7.0.0-beta.7/all.global.js'></script>
  
  <!-- THEME JS -->
+ <script src='https://cdn.jsdelivr.net/npm/@fullcalendar/web-component@7.0.0-beta.7/themes/classic/global.js'></script>

  <!-- STYLESHEETS -->
+ <script src='https://cdn.jsdelivr.net/npm/@fullcalendar/web-component@7.0.0-beta.7/skeleton.styles.js'></script>
+ <script src='https://cdn.jsdelivr.net/npm/@fullcalendar/web-component@7.0.0-beta.7/themes/classic/theme.styles.js'></script>
+ <link href='https://cdn.jsdelivr.net/npm/@fullcalendar/web-component@7.0.0-beta.7/themes/classic/palette.css' rel='stylesheet' />

Please note, skeleton.styles.js and theme.styles.js are <script> tags, and yes they do inject CSS. This is required for the web component’s shadow DOM.

  <!-- STANDARD + SCHEDULER JS -->
- <script src='https://cdn.jsdelivr.net/npm/@fullcalendar/web-component-scheduler@6.1.20/index.global.js'></script>
+ <script src='https://cdn.jsdelivr.net/npm/@fullcalendar/web-component@7.0.0-beta.7/all.global.js'></script>
+ <script src='https://cdn.jsdelivr.net/npm/@fullcalendar/web-component-scheduler@7.0.0-beta.7/all.global.js'></script>

  <!-- THEME JS -->
+ <script src='https://cdn.jsdelivr.net/npm/@fullcalendar/web-component@7.0.0-beta.7/themes/classic/global.js'></script>
  
  <!-- STYLESHEETS -->
+ <script src='https://cdn.jsdelivr.net/npm/@fullcalendar/web-component@7.0.0-beta.7/skeleton.styles.js'></script>
+ <script src='https://cdn.jsdelivr.net/npm/@fullcalendar/web-component@7.0.0-beta.7/themes/classic/theme.styles.js'></script>
+ <link href='https://cdn.jsdelivr.net/npm/@fullcalendar/web-component@7.0.0-beta.7/themes/classic/palette.css' rel='stylesheet' />

Breaking: customButtons renamed to buttons (used for custom and standard buttons). buttonText removed in favor of buttons[].text:

  <FullCalendar
-   buttonText={{
-     hello: 'Hello'
-   }}
-   customButtons={{
+   buttons={{
      hello: {
+       text: 'Hello'
        click() {
          alert('hello!')
        }
      }
    }}
  />

Breaking: buttonIcons removed. Attach a custom class-name and associated glyphicon with buttons[].iconClass:

  <FullCalendar
-   buttonIcons={{
-     next: 'my-button-icon'
-   }}
+   buttons={{
+     next: {
+       iconClass: 'my-button-icon'
+     }
+   }}
  />

However, SVGs are now preferred over glyphicons, and can be attached with buttons[].iconContent (more info).

Type change: each entry of the buttons map:

- import { type CustomButtonInput } from '@fullcalendar/core'
+ import { type ButtonInput } from '@fullcalendar/react' // or angular/vue3/etc

Events (General)

The changes here apply to events in all views.

Breaking: All class-name properties have been renamed and only accept simple string:

  <FullCalendar
    // calendar-wide
-   eventClassNames={['my-event', 'my-util']}
+   eventClass='my-event my-util'
  
    // event-specific
    events={[
      title: 'My Event',
      start: '2026-02-02',
-     classNames: ['my-event', 'my-util']
+     className: 'my-event my-util'
    ]}
  
    // by event-source
    eventSources={[
      {
        url: '/my-feed.php',
-       classNames: ['my-event', 'my-util']
+       className: 'my-event my-util'
      }
    ]}
  
    // by resource
    resources={[
      {
        id: 'a',
-       eventClassNames: ['my-event', 'my-util']
+       eventClass: 'my-event my-util'
      }
    ]}
  />

  // via Event API
  const event = calendarApi.getEventById('a')
- event.classNames // array of strings
+ event.className // string

  // via Resource API
  const resource = calendarApi.getResourceById('b')
- resource.eventClassNames // array of string
+ resource.eventClass // string

Breaking: In v6, event color customization would affect literal parts of the element (border, background, text). In v7, the properties are more semantic and the individual theme can decide what to do with them.

  <FullCalendar
    // calendar-wide
-   eventBackgroundColor='red' // these can no longer be set separately...
-   eventBorderColor='red'     // ...use eventColor instead...
    eventColor='red'
-   eventTextColor='white'
+   eventContrastColor='white'

    // event-specific
    events={[
      {
        title: 'My Event',
        start: '2026-02-02',
-       backgroundColor: 'red',
-       borderColor: 'red',
        color: 'red',
-       textColor: 'white',
+       contrastColor: 'white',
      }
    ]}

    // by event-source
    eventSources={[
      {
        url: '/my-feed.php',
-       backgroundColor: 'red',
-       borderColor: 'red',
        color: 'red',
-       textColor: 'white',
+       contrastColor: 'white',
      }
    ]}

    // by resource
    resources={[
      {
        id: 'a',
-       eventBackgroundColor: 'red',
-       eventBorderColor: 'red',
        eventColor: 'red',
-       eventTextColor: 'white',
+       eventContrastColor: 'white',
      }
    ]}
  />

  // via Event API
  const event = calendarApi.getEventById('a')
- event.backgroundColor
- event.borderColor
+ event.color
- event.textColor
+ event.contrastColor

  // via Resource API
  const resource = calendarApi.getResourceById('b')
- resource.eventBackgroundColor
- resource.eventBorderColor
+ resource.eventColor
- resource.eventTextColor
+ resource.eventContrastColor

If you’ve customized the classic theme to have events with border colors that are DIFFERENT than their background colors, and want to maintain that look in v7, you’ll need to fork the theme.

Breaking: In v6, for list-item events in DayGrid view, the content generated eventContent would clear rendering of the colored dot. In v7, eventContent injects into the “inner” container (aka eventInnerClass) which does not wrap the dot (aka eventBeforeClass). To restore old behavior:

  <FullCalendar
    eventContent={(arg) => <span>Cool {arg.event.title}</span>}
    views={{
+     dayGrid: { listItemEventBeforeClass: 'display-none' },
+     timeGrid: { listItemEventBeforeClass: 'display-none' }
    }}
  />

/* in CSS */
+ .display-none { display: none }

Type change: The parameter passed to eventClass (formerly eventClassNames), eventContent, eventDidMount, and eventWillUnmount has changed:

- import { type EventContentArg } from '@fullcalendar/core'
+ import { type EventDisplayData } from '@fullcalendar/react' // or angular/vue3/etc

Breaking: Event API’s .toPlainObject() and .toJSON() methods have modified signatures and return types:

  const res = event.toPlainObject({ // or .toJSON()
-   collapseColor: true
  })
  
- res.classNames // array of strings
+ res.className // string
  
- res.backgroundColor
- res.borderColor
+ res.color
  
- res.textColor
+ res.contrastColor

Resources (General)

Breaking: The generic resourceLabel* settings have been replaced with more UI-specific settings. Class-name settings now use simple strings instead of arrays:

Resource Day Header for Resource DayGrid and Resource TimeGrid views
Resource Cell for Resource Timeline view

Breaking: Resource API’s .toPlainObject() and .toJSON() methods have modified signatures and return types:

  const res = event.toPlainObject({ // or .toJSON()
-   collapseColor: true
  })
  
- res.eventClassNames // array of strings
+ res.eventClass // string
  
- res.eventBackgroundColor
- res.eventBorderColor
+ res.eventColor
  
- res.eventTextColor
+ res.eventContrastColor

Calendar Views (General)

The follow changes apply to all calendar views.

Root Element

Breaking: viewClassNames renamed and accepts only a simple string:

  <FullCalendar
-   viewClassNames={['my-view', 'my-util']}
+   viewClass='my-view my-util'
  />

Types change: The parameter given to all view* callbacks has changed:

- import { type ViewContentArg } from '@fullcalendar/core'
+ import { type ViewDisplayData } from '@fullcalendar/react' // or angular/vue3/etc

Nav-Links

Breaking: navLinkClassNames rename and accepts only a simple string:

  <FullCalendar
-   navLinkClassNames={['my-nav-link', 'my-util']}
+   navLinkClass='my-nav-link my-util'
  />

More-Links

Breaking: moreLinkClassNames rename and accepts only a simple string:

  <FullCalendar
-   moreLinkClassNames={['my-more-link', 'my-util']}
+   moreLinkClass='my-more-link my-util'
  />

Types change: The parameter given to all moreLink* callbacks has changed:

- import { type MoreLinkContentArg } from '@fullcalendar/core'
+ import { type MoreLinkData } from '@fullcalendar/react' // or angular/vue3/etc

Week Number

Breaking: The generic weekNumber* settings have been replaced with more UI-specific settings. Class-name settings now use simple strings instead of arrays:

Inline Week Number for DayGrid view
Week Number Header for TimeGrid view

All-Day

Breaking: The generic allDay* settings have been replaced with more UI-specific settings. Class-name settings now use simple strings instead of arrays:

All-Day Header for TimeGrid view
All-Day Text on Events for List view

Time Slot Header

Time slots are present in TimeGrid View and Timeline View. The changes here apply to both views.

Breaking: slot “label” settings have been renamed to slot “header”. Also, class-names must be simple strings:

<FullCalendar
- slotLabelClassNames={['my-slot', 'my-util']}
+ slotHeaderClass='my-slot my-util'

- slotLabelContent={(data) => <span>{data.text}</span>}
+ slotHeaderContent={(data) => <span>{data.text}</span>}

- slotLabelDidMount={(data) => { /* handler */ }}
+ slotHeaderDidMount={(data) => { /* handler */ }}

- slotLabelWillUnmount={(data) => { /* handler */ }}
+ slotHeaderWillUnmount={(data) => { /* handler */ }}
/>

Type change: The parameter given to the callbacks has changed:

- import { type SlotLabelContentArg } from '@fullcalendar/core'
+ import { type SlotHeaderData } from '@fullcalendar/react' // or angular/vue3/etc

Time Slot Lane

Time slots are present in TimeGrid View and Timeline View. The changes here apply to both views.

Breaking: the slotLaneClassNames setting renamed. Must be a simple string. slotLaneContent removed:

<FullCalendar
- slotLaneClassNames={['my-slot', 'my-util']}
+ slotLaneClass='my-slot my-util'

  // NO REPLACEMENT - lane inner-content can no longer be customized
- slotLaneContent={(data) => <span>...</span>}
/>

Type change: The parameter given to the slotLane* callbacks has changed:

- import { type SlotLaneContentArg } from '@fullcalendar/core'
+ import { type SlotLaneData } from '@fullcalendar/react' // or angular/vue3/etc

Now-Indicator

A now-indicator is present in TimeGrid View and Timeline View. The changes here apply to both views.

Breaking: in v6, the nowIndicator* settings represented BOTH the “arrow”, which appeared in the time axis, and the “line”, which appeared over a day. One would differentiate based on data.isAxis (now removed). In v7, there are distinct settings for each:

<FullCalendar
- nowIndicatorClassNames={(data) => (
-   data.isAxis
-     ? ['my-arrow', 'my-util']
-     : ['my-line', 'my-util']
- )}

- nowIndicatorContent={(data) => (
-   data.isAxis
-     ? <span>the axis content</span>
-     : <span>the line content</span>
- )}

- nowIndicatorDidMount={(data) => {
-   if (data.isAxis) {
-     // for axis
-   } else {
-     // for line
-   }
- }}

- nowIndicatorWillUnmount={(data) => {
-   if (data.isAxis) {
-     // for axis
-   } else {
-     // for line
-   }
- }}
/>

<FullCalendar

+  nowIndicatorHeaderClass='my-arrow my-util'
+  nowIndicatorLineClass='my-line my-util'


+ nowIndicatorHeaderContent={(data) => (
+   <span>the axis content</span>
+ )}
+ nowIndicatorLineContent={(data) => (
+   <span>the line content</span>
+ )}


+ nowIndicatorHeaderDidMount={(data) => {
+   // for axis
+ }}
+ nowIndicatorLineDidMount={(data) => {
+   // for line
+ }}


+ nowIndicatorHeaderWillUnmount={(data) => {
+   // for axis
+ }}
+ nowIndicatorLineWillUnmount={(data) => {
+   // for line
+ }}
/>

Type changes: The parameter given to the callbacks has also been split in two:

- import { NowIndicatorContentArg } from '@fullcalendar/core'

// for axis
+ import { NowIndicatorHeaderData } from '@fullcalendar/react' // or angular/vue3/etc

// for line
+ import { NowIndicatorLineData } from '@fullcalendar/react' // or angular/vue3/etc

DayGrid View

Includes changes from:

Calendar Views (General)
Events (General)

Day Header

Breaking: dayHeaderClassNames renamed and accepts only a simple string. Can no longer do horizontal alignment:

<FullCalendar
- dayHeaderClassNames={['my-header', 'my-util']}
+ dayHeaderClass='my-header my-util'
+ dayHeaderAlign='start' // horizontal alignment (in LTR, 'start' means left)
/>

/* in CSS */
.my-header {
- text-align: left; /* horizontal alignment */
}

The dayHeader* settings now apply to the popover header, which is usually desirable. See Popover CSS migration docs.

Types change: The parameter given to all dayHeader* callbacks has changed:

- import { type DayHeaderContentArg } from '@fullcalendar/core'
+ import { type DayHeaderData } from '@fullcalendar/react' // or angular/vue3/etc

Day Cell

Breaking: dayCellClassNames renamed and accepts only a simple string. dayCellContent renamed:

<FullCalendar
- dayCellClassNames={['my-cell', 'my-util']}
+ dayCellClass='my-cell my-util'

- dayCellContent={(data) => (
+ dayCellTopContent={(data) => (
    <span>In place of day-number</span>
  )}
/>

The dayCell* settings now apply to the popover body, which is usually desirable. See Popover CSS migration docs.

The dayCell* settings previously applied to TimeGrid Day Lane, but no longer.

Types change: The parameter given to all dayCell* callbacks has changed:

- import { type DayCellContentArg } from '@fullcalendar/core'
+ import { type DayCellData } from '@fullcalendar/react' // or angular/vue3/etc

Inline Week Number

Breaking: Week numbers, as they render in a DayGrid, are now called “inline week numbers” because they rest within the cells, not as a separate column. Thus, they have been renamed. You can configure them as top-level settings, and class-name settings must be simple strings:

<FullCalendar
- views={{
-   dayGrid: {
-     weekNumberClassNames: ['my-week-number', 'my-util']
-     weekNumberContent: (data) => <span>{data.text}</span>
-     weekNumberDidMount: (data) => { /* handler */ }
-     weekNumberWillUnmount: (data) => { /* handler */ }
-   }
- }}
+ inlineWeekNumberClass='my-week-number my-util'
+ inlineWeekNumberContent={(data) => <span>{data.text}</span>}
+ inlineWeekNumberDidMount={(data) => { /* handler */ }}
+ inlineWeekNumberWillUnmount={(data) => { /* handler */ }}
/>

Type change: The parameter given to these callbacks has changed:

- import { type WeekNumberContentArg } from '@fullcalendar/core'
+ import { type InlineWeekNumberData } from '@fullcalendar/react' // or angular/vue3/etc

Resource DayGrid View

Includes changes from:

Calendar Views (General)
Events (General)
DayGrid View

Resource Day Header

Breaking: “Resource labels”, as they render in DayGrid and TimeGrid, are now called “resource day headers”. You can configure them as top-level settings, and class-name settings must be simple strings:

<FullCalendar
- views={{
-   resourceDayGrid: { // OR resourceTimeGrid
-     resourceLabelClassNames: ['my-header', 'my-util'],
-     resourceLabelContent: (data) => <span>{data.text}</span>,
-     resourceLabelDidMount: (data) => { /* handler */ },
-     resourceLabelWillUnmount: (data) => { /* handler */ },
-   }
- }}
+ resourceDayHeaderClass='my-header my-util'
+ resourceDayHeaderAlign='start' // horizontal alignment (in LTR, 'start' means left)
+ resourceDayHeaderContent={(data) => <span>{data.text}</span>}
+ resourceDayHeaderDidMount={(data) => { /* handler */ }}
+ resourceDayHeaderWillUnmount={(data) => { /* handler */ }}
/>

/* in CSS */
.my-header {
- text-align: left; /* horizontal alignment */
}

Type change: The parameter given to these callbacks has changed:

- import { type ResourceLabelContentArg } from '@fullcalendar/core'
+ import { type ResourceDayHeaderData } from '@fullcalendar/react' // or angular/vue3/etc

TimeGrid View

Includes changes from:

Calendar Views (General)
Events (General)
DayGrid View - for “day headers” and all-day “day cells”

Week Number Header

Breaking: Week numbers, as they render in a TimeGrid, are now called “week number headers” because they’re located in the header of the view, above the time axis. They have been renamed and can be configured as top-level settings, and class-name settings must be simple strings:

<FullCalendar
- views={{
-   timeGrid: {
-     weekNumberClassNames: ['my-week-header', 'my-util']
-     weekNumberContent: (data) => <span>{data.text}</span>
-     weekNumberDidMount: (data) => { /* handler */ }
-     weekNumberWillUnmount: (data) => { /* handler */ }
-   }
- }}
+ weekNumberHeaderClass='my-week-header my-util'
+ weekNumberHeaderContent={(data) => <span>{data.text}</span>}
+ weekNumberHeaderDidMount={(data) => { /* handler */ }}
+ weekNumberHeaderWillUnmount={(data) => { /* handler */ }}
/>

Type change: The parameter given to these callbacks has changed:

- import { type WeekNumberContentArg } from '@fullcalendar/core'
+ import { type WeekNumberHeaderData } from '@fullcalendar/react' // or angular/vue3/etc

All-Day Header

Breaking: The cell labeling the all-day section has been renamed to “all day header”. Class-name settings must be simple strings:

<FullCalendar
- views={{
-   timeGrid: {
-     allDayClassNames: ['my-all-day', 'my-util'],
-     allDayContent: (data) => <span>{data.text}</span>,
-     allDayDidMount: (data) => { /* handler */ },
-     allDayWillUnmount: (data) => { /* handler */ },
-   }
- }}
+ allDayHeaderClass='my-all-day my-util'
+ allDayHeaderContent={(data) => <span>{data.text}</span>}
+ allDayHeaderDidMount={(data) => { /* handler */ }}
+ allDayHeaderWillUnmount={(data) => { /* handler */ }}
/>

Type change: The parameter given to these callbacks has changed:

- import { type AllDayContentArg } from '@fullcalendar/core'
+ import { type AllDayHeaderData } from '@fullcalendar/react' // or angular/vue3/etc

Day Lane

Breaking: TimeGrid lane hooks are renamed from dayCell* to dayLane*, lane class-name settings must be simple strings, and lane content customization is no longer supported.

<FullCalendar
- dayCellClassNames={['my-lane', 'my-util']}
+ dayLaneClass='my-lane my-util'

  // NO REPLACEMENT - can't customize content in here anymore
- dayCellContent={(data) => <span>...</span>}

- dayCellDidMount={(data) => { /* handler */ }}
+ dayLaneDidMount={(data) => { /* handler */ }}

- dayCellWillUnmount={(data) => { /* handler */ }}
+ dayLaneWillUnmount={(data) => { /* handler */ }}
/>

Type change: The parameter given to these callbacks has changed:

- import { type DayCellContentArg } from '@fullcalendar/core'
+ import { type DayLaneData } from '@fullcalendar/react' // or angular/vue3/etc

Resource TimeGrid View

Includes changes from:

Calendar Views (General)
Events (General)
TimeGrid View
DayGrid View - for “day headers” and all-day “day cells”

List View

Includes changes from:

Calendar Views (General)
Events (General)

Day Header

Breaking: List-view day header hooks moved from views.list.dayHeader* to top-level listDayHeader* settings, and class-name settings must be simple strings.

<FullCalendar
- views={{
-   list: {
-     dayHeaderClassNames: ['my-header', 'my-util'],
-     dayHeaderContent: (data) => <span>{data.text}</span>,
-     dayHeaderDidMount: (data) => { /* handler */ },
-     dayHeaderWillUnmount: (data) => { /* handler */ },
-   }
- }}
+ listDayHeaderClass='my-header my-util'
+ listDayHeaderContent={(data) => <span>{data.text}</span>} // uses ListDayHeaderInnerData
+ listDayHeaderDidMount={(data) => { /* handler */ }}
+ listDayHeaderWillUnmount={(data) => { /* handler */ }}
/>

Type change: The parameter given to these callbacks has changed:

- import { type DayHeaderContentArg } from '@fullcalendar/core'

// for listDayHeaderClass, listDayHeaderDidMount, listDayHeaderWillUnmount
+ import { type ListDayHeaderData } from '@fullcalendar/react' // or angular/vue3/etc

// for listDayHeaderContent, listDayHeaderInnerClass (new)
+ import { type ListDayHeaderInnerData } from '@fullcalendar/react' // or angular/vue3/etc

All-Day Text on Events

Breaking: In List view, all-day event text is no longer customized via generic allDay* hooks. Use list event* hooks instead.

<FullCalendar
- allDayClassNames={['my-all-day-text', 'my-util']}
- allDayContent={(data) => <span>{data.text}</span>}
- allDayDidMount={(data) => { /* handler */ }}
- allDayWillUnmount={(data) => { /* handler */ }}
+ views={{
+   list: {
+     eventTimeClass: 'my-all-day-text my-util',
+     eventContent: (data) => (
+       <>
+         <div className={data.timeClass}><i>{data.timeText}</i></div>
+         <div className={data.titleClass}>{data.titleText}</div>
+       </>
+     ),
+     eventDidMount: (data) => {
+       data.el.querySelector('.my-all-day-text')
+     },
+     eventWillUnmount: (data) => {
+       data.el.querySelector('.my-all-day-text')
+     }
+   }
+ }}
/>

No-Events Screen

Breaking: noEventsClassNames has been renamed to noEventsClass, which accepts only a simple string.

<FullCalendar
- noEventsClassNames={['my-no-events', 'my-util']}
+ noEventsClass='my-no-events my-util'
/>

Type change: The parameter given to these callbacks has changed:

- import { type NoEventsContentArg } from '@fullcalendar/core'
+ import { type NoEventsData } from '@fullcalendar/react' // or angular/vue3/etc

MultiMonth View

Includes changes from:

Calendar Views (General)
Events (General)

Breaking: multiMonthMinWidth and multiMonthTitleFormat are renamed to singleMonthMinWidth and singleMonthTitleFormat.

<FullCalendar
- multiMonthMinWidth={200}
+ singleMonthMinWidth={200}

- multiMonthTitleFormat={{ year: 'numeric', month: 'long' }}
+ singleMonthTitleFormat={{ year: 'numeric', month: 'long' }}
/>

Breaking: singleMonthMinWidth (formerly multiMonthMinWidth) now INCLUDES padding.

Resource Timeline View

Includes changes from:

Calendar Views (General)
Events (General)

Breaking: resourceAreaColumns is renamed to resourceColumns, and related *ClassNames hooks are now *Class string settings.

  <FullCalendar
-   resourceAreaColumns={[
+   resourceColumns={[
      {
        id: 'resource-a',
        title: 'Resource A',
-       headerClassNames: ['my-header', 'my-util'],
+       headerClass: 'my-header my-util',
-       cellClassNames: ['my-cell', 'my-util'],
+       cellClass: 'my-cell my-util',
      }
    ]}

    // will apply to ALL headers
-   resourceAreaHeaderClassNames={['my-header', 'my-util']}
+   resourceColumnHeaderClass='my-header my-util'
-   resourceAreaHeaderContent={(data) => <span>custom content</span>}
+   resourceColumnHeaderContent={(data) => <span>custom content</span>}
-   resourceAreaHeaderDidMount={() => { /* handler */ }}
+   resourceColumnHeaderDidMount={() => { /* handler */ }}
-   resourceAreaHeaderWillUnmount={() => { /* handler */ }}
+   resourceColumnHeaderWillUnmount={() => { /* handler */ }}
  />

Type change: The parameter given to these callbacks has changed:

- import { type ColHeaderContentArg } from '@fullcalendar/core'
+ import { type ResourceColumnHeaderData } from '@fullcalendar/react' // or angular/vue3/etc

Breaking: In v6, the resourceGroupLabel* settings where used to style both row-grouping group headers AS WELL AS column-grouping cells, without any way to distinguish the two from the callbacks themselves. In v7, there are two separate entities for each (resourceGroupHeader* and the generic resourceCell*). Also, .groupValue is killed:

<FullCalendar
- resourceGroupLabelClassNames={['my-resource-group-header', 'my-resource-group-cell', 'my-util']}
- resourceGroupLabelContent={(data) => (
-   <span>{data.groupValue}</span>
- )}
- resourceGroupLabelDidMount={(data) => { /* handler */ }}
- resourceGroupLabelWillUnmount={(data) => { /* handler */ }}

  // header for grouped rows
+ resourceGroupHeaderClass='my-resource-group-header my-util'
+ resourceGroupHeaderContent={(data) => (
+   <span>{data.fieldValue}</span>
+ )}
+ resourceGroupHeaderDidMount={(data) => { /* handler */ }}
+ resourceGroupHeaderWillUnmount={(data) => { /* handler */ }}

  // grouped cells
+ resourceCellClass={(data) => clsx(
+   !data.resource && // in group?
+     'my-resource-group-cell my-util'
+ )}
+ resourceCellContent={(data) => (
+   <span>{data.fieldValue}</span> // applies to all cells (grouped and non-grouped)
+ )}
+ resourceCellDidMount={(data) => {
+   if (!data.resource) { /* handler for group */ }
+ }}
+ resourceCellWillUnmount={(data) => {
+   if (!data.resource) { /* handler for group */ }
+ }}
/>

Type change: The parameter given to these callbacks has changed:

- import { type ColCellContentArg } from '@fullcalendar/core'

// header for grouped rows 
+ import { type ResourceGroupHeaderData } from '@fullcalendar/react' // or angular/vue3/etc

// grouped cells
+ import { type ResourceCellData } from '@fullcalendar/react' // or angular/vue3/etc

Resource Cell

Breaking: resourceLabel* has been replaced by generalized resourceCell* hooks. If you only want the title cell, branch on data.field === 'title'.

<FullCalendar
- views={{
-   resourceTimeline: {
-     resourceLabelClassNames: ['my-resource-cell', 'my-util'],
-     resourceLabelContent: (data) => (
-       <span>{data.resource.title}</span>
-     ),
-     resourceLabelDidMount: (data) => { /* handler */ },
-     resourceLabelWillUnmount: (data) => { /* handler */ },
-   }
- }}

+ resourceCellClass={(data) => clsx(
+   (data.field === 'title') && 'my-resource-cell my-util'
+ )}
+ resourceCellContent={(data) => (
+   <span>{data.fieldValue}</span> // applies to all cells
+ )}
+ resourceCellDidMount={(data) => {
+   if (data.field === 'title') { /* handler */ }
+ }}
+ resourceCellWillUnmount={(data) => {
+   if (data.field === 'title') { /* handler */ }
+ }}
/>

Note that the resourceLabel* props ALSO apply to Resource DayGrid/TimeGrid. See those migrations above.

Resource Lane

Breaking: resourceLaneClassNames is renamed to resourceLaneClass (simple string only), and resourceLaneContent is split into resourceLaneTopContent and resourceLaneBottomContent.

<FullCalendar
- resourceLaneClassNames={['my-lane', 'my-util']}
+ resourceLaneClass='my-lane my-util'

- resourceLaneContent={(data) => <span>...</span>}
+ resourceLaneTopContent={(data) => <span>...</span>}
+ // or
+ resourceLaneBottomContent={(data) => <span>...</span>}
/>

Type change: The parameter given to these callbacks has changed:

- import { type ResourceLaneContentArg } from '@fullcalendar/core'
+ import { type ResourceLaneData } from '@fullcalendar/react' // or angular/vue3/etc

Group Lane

Breaking: resourceGroupLaneClassNames is renamed to resourceGroupLaneClass (simple string only), and group data now uses fieldValue instead of groupValue.

<FullCalendar
- resourceGroupLaneClassNames={['my-group-lane', 'my-util']}
+ resourceGroupLaneClass='my-group-lane my-util'

  resourceGroupContent={(data) => (
-   <span>{data.groupValue}</span>
+   <span>{data.fieldValue}</span>
  )}
/>

Type change: The parameter given to these callbacks has changed:

- import { type ColCellContentArg } from '@fullcalendar/core'
+ import { type ResourceGroupLaneData } from '@fullcalendar/react' // or angular/vue3/etc

Custom Views

Custom View via Settings

Breaking: In custom view definitions, .classNames (array) is replaced by .class / .className (single string).

  var calendar = new Calendar(calendarEl, {
    views: {
      timeGridFourDay: {
-       classNames: ['my-classname', 'my-util'],
+       className: 'my-classname my-util',
        type: 'timeGrid',
        duration: { days: 4 },
      }
    }
  })

Breaking: The buttonText setting no longer respected. Instead, add to the buttons map:

  var calendar = new Calendar(calendarEl, {
    views: {
      timeGridFourDay: {
        type: 'timeGrid',
        duration: { days: 4 },
-       buttonText: '4 day'
      }
    },
+   buttons: {
+     timeGridFourDay: {
+       text: '4 day'
+     }
+   },
    headerToolbar: {
      center: 'dayGridMonth,timeGridFourDay'
    }
  })

Custom View via JS

Breaking: createPlugin is no longer required for custom view plugin objects (see “Custom Plugins” below).

Luxon Plugin

Breaking: The @fullcalendar/luxon3 plugin has been removed. Remove it from your package.json:

{
  "dependencies": {
    "@fullcalendar/react": "7@beta",
-   "@fullcalendar/luxon3": "^6.1.20",
    "luxon": "^3.7.2"
  }
}

Breaking: Because the @fullcalendar/luxon3 plugin has been removed, the toLuxonDateTime and toLuxonDuration utilities are no longer available. You can easily replace with direct calls to Luxon:

- import { toLuxonDateTime, toLuxonDuration } from '@fullcalendar/luxon3'
+ import { DateTime, Duration } from 'luxon'
  
  const locale = 'en-US'
  const timeZone = 'America/New_York'
  
  <FullCalendar
    locale={locale}
    timeZone={timeZone}
    dateClick={(arg) => {
-     const dt = toLuxonDateTime(arg.date, arg.view.calendar)
+     const dt = DateTime.fromJSDate(arg.date, { zone: timeZone, locale })
      ...
    }}
    eventDrop={(arg) => {
-     const dur = toLuxonDuration(arg.delta, arg.view.calendar)
+     const dur = Duration.fromObject(arg.delta, { locale })
      ...
    }}
  />

Breaking: The @fullcalendar/luxon3 plugin has been removed, but it’s format-string functionality has been moved to a different plugin:

npm install --save @fullcalendar/format-luxon3

Then replace usage in your code:

- import luxonPlugin from '@fullcalendar/luxon3'
+ import luxonFormatPlugin from '@fullcalendar/format-luxon3'
  
  <FullCalendar
    titleFormat='LLLL d, yyyy' // a format-string
    plugins={[
-     luxonPlugin,
+     luxonFormatPlugin, // for format-strings only
      ...
    ]}
    ...
  />

Moment Plugins

Breaking: The two moment plugin have been removed. Remove them from your package.json:

{
  "dependencies": {
    "@fullcalendar/react": "7@beta",
-   "@fullcalendar/moment": "^6.1.20",
-   "@fullcalendar/moment-timezone": "^6.1.20",
    "moment": "^2.30.1"
  }
}

Breaking: Because the @fullcalendar/moment plugin has been removed, the toMoment and toMomentDuration utilities are no longer available. You can replace them with direct calls to Moment:

- import { toMoment, toMomentDuration } from '@fullcalendar/luxon3'
+ import moment from 'moment'
  
  const locale = 'en-US'
  const timeZone = 'America/New_York'
  
  <FullCalendar
    locale={locale}
    timeZone={timeZone}
    dateClick={(arg) => {
-     const mom = toMoment(arg.date, arg.view.calendar)
+     let mom: moment.Moment
+     if (timeZone === 'local') {
+       mom = moment(arg.date)
+     } else if (timeZone === 'UTC') {
+       mom = moment.utc(arg.date)
+     } else {
+       mom = moment.tz(arg.date, timeZone)
+     }
      ...
    }}
    eventDrop={(arg) => {
-     const dur = toMomentDuration(arg.delta, arg.view.calendar)
+     const dur = moment.duration(arg.delta)
      ...
    }}
  />

Breaking: The @fullcalendar/moment plugin has been removed, but it’s format-string functionality has been moved to a different plugin:

npm install --save @fullcalendar/format-moment

Then replace usage in your code:

- import momentPlugin from '@fullcalendar/moment'
+ import momentFormatPlugin from '@fullcalendar/format-moment'
  
  <FullCalendar
    titleFormat: 'MMMM D, YYYY' // a format-string
    plugins={[
-     momentPlugin,
+     momentFormatPlugin, // for format-strings only
      ...
    ]}
    ...
  />

Custom Plugins

Breaking: the createPlugin function no longer necessary to prepare a plugin. Just pass-in the object

- const customViewPlugin = createPlugin({
+ const customViewPlugin = {
    views: {
      custom: CustomViewConfig
    }
+ };
- });
  
  let calendar = new Calendar(calendarEl, {
    plugins: [customViewPlugin],
  });

Type change:

- import { PluginDef, PluginDefInput } from '@fullcalendar/core'
+ import { PluginInput } from '@fullcalendar/react' // or angular/vue3/etc

Custom Theme Class

Breaking: V6 had an poorly-documented API for theming that was rarely used by developers. It has been replaced by the miriad of *Class and *Content settings now available in v7. Here’s how to migrate:

- import {
-   StandardTheme,
-   createPlugin
- } from '@fullcalendar/core'
  
- class CustomTheme extends StandardTheme {
-   root = 'my-root'

    // toolbar
-   buttonGroup = 'my-button-group'
-   button = 'my-button'
-   buttonActive = 'my-button-selected'

    // popover
-   popover='my-popover'
-   popoverHeader='my-popover-header'
-   popoverContent='my-popover-body'

    // affects multiple elements
-   tableCellShaded = 'my-cell-shaded'
- }
  
  <FullCalendar
-   plugins={
-     createPlugin({ custom: CustomTheme })
-   ]}
-   theme='custom'

  <FullCalendar

+   className='my-root'

    // toolbar
+   buttonGroupClass='my-button-group'
+   buttonClass={(data) => clsx(
+     'my-button',
+     data.isSelected && 'my-button-selected',
+   )}

    // popover
+   popoverClass='my-popover'
+   dayHeaderClass={(data) => clsx(
+     data.inPopover && 'my-popover-header'
+   )}
+   dayCellClass={(data) => clsx(
+     data.inPopover && 'my-popover-body'
+   )}

    // affects multiple elements
+   allDayDividerClass='my-cell-shaded'
+   listDayHeaderClass='my-cell-shaded'
+   resourceColumnDividerClass='my-cell-shaded'
+   resourceGroupHeaderClass='my-cell-shaded'
+   resourceGroupLaneClass='my-cell-shaded'
  />

The following members have been removed because class-based glyph icons are now discouraged:

- CustomTheme.prototype.baseIconClass
- CustomTheme.prototype.iconClasses
- CustomTheme.prototype.rtlIconClasses
- CustomTheme.prototype.iconOverridePrefix

Locales

Breaking: The Shape of a locale object has changed:

  {
    code: 'es',
-   buttonText: {
-     prev: 'Ant',
-     next: 'Sig',
-     today: 'Hoy',
-     year: 'Año',
-     month: 'Mes',
-     week: 'Semana',
-     day: 'Día',
-     list: 'Agenda',
-   },
-   buttonHints: {
-     prev: '$0 antes',
-     next: '$0 siguiente',
-     today: (unitText) => { /* ... */ }
-   },
  }

  {
    code: 'es',
  
+   prevText: 'Ant',
+   nextText: 'Sig',
+   todayText: 'Hoy',
+   yearText: 'Año',
+   monthText: 'Mes',
+   weekText: 'Semana',
+   dayText: 'Día',
+   listText: 'Agenda',
  
  
+   prevHint: '$0 antes',
+   nextHint: '$0 siguiente',
+   todayHint: (unitText) => { /* ... */ }

  }

Interactions

Breaking: removed fixedMirrorParent setting. Element dragging “mirror” elements will always be attached to <body> now:

<FullCalendar
- fixedMirrorParent={document.body} // unnecessary now
/>

Type change: For all names, the Arg postfix replaced with Data:

- import {
-   DateSelectArg,
-   DateUnselectArg,
-   EventClickArg,
-   EventAddArg,
-   EventChangeArg,
-   EventRemoveArg,
- } from '@fullcalendar/core'

- import {
-   DateClickArg,
-   EventDragStartArg,
-   EventDragStopArg,
-   EventDropArg,
-   EventResizeStartArg,
-   EventResizeStopArg,
-   EventResizeDoneArg,
-   EventHoveringArg,
-   DropArg,
-   EventReceiveArg,
-   EventLeaveArg,
- } from '@fullcalendar/interaction'

+ import {
+   DateSelectData,
+   DateUnselectData,
+   EventClickData,
+   EventAddData,
+   EventChangeData,
+   EventRemoveData,
+ } from '@fullcalendar/react'
                      // or angular/vue3/etc
+ import {
+   DateClickData,
+   EventDragStartData,
+   EventDragStopData,
+   EventDropData,
+   EventResizeStartData,
+   EventResizeStopData,
+   EventResizeDoneData,
+   EventHoveringData,
+   DropData,
+   EventReceiveData,
+   EventLeaveData,
+ } from '@fullcalendar/react/interaction'
                      // or angular/vue3/etc

Misc

Type change: The argument given to the datesSet callback has changed:

- import { DatesSetArg } from '@fullcalendar/core'
+ import { DatesSetData } from '@fullcalendar/react' // or angular/vue3/etc

V7 JavaScript API Migration Guide

Table of Contents

Before You Begin

Components in Examples

clsx

React

React Standard Packages

React Scheduler Packages

Remix

Vue

Vue Standard Packages

Vue Scheduler Packages

Angular

Angular Standard Packages

Angular Scheduler Packages

Vanilla JS

Vanilla JS Standard Packages

Vanilla JS Scheduler Packages

Global Script Tags

Web Component

Web Component Standard Packages

Web Component Scheduler Packages

Global Script Tags

Toolbar

Events (General)

Resources (General)

Calendar Views (General)

Root Element

Nav-Links

More-Links

Week Number

All-Day

Time Slot Header

Time Slot Lane

Now-Indicator

DayGrid View

Day Header

Day Cell

Inline Week Number

Resource DayGrid View

Resource Day Header

TimeGrid View

Week Number Header

All-Day Header

Day Lane

Resource TimeGrid View

List View

Day Header

All-Day Text on Events

No-Events Screen

MultiMonth View

Resource Timeline View

Resource Cell

Resource Lane

Group Lane

Custom Views

Custom View via Settings

Custom View via JS

Luxon Plugin

Moment Plugins

Custom Plugins

Custom Theme Class

Locales

Interactions

Misc