Open-Source Calendar and Scheduler Tutorials

The free and open-source DayPilot Lite library provides calendar/scheduling components that you can use to build time management, event planning, resource scheduling, project management applications or booking systems. The library is hosted at NPM and it is available for vanilla JavaScript, Angular, React, and Vue.

It is available under a business-friendly Apache License that lets you use the library in open-source and commercial projects. 

You can use the event calendar component to create a traditional day/week/month calendar view that you know from Microsoft Outlook, Google Calendar or Apple Calendar. See the tutorials to learn how to define and integrate different calendar views, share the data and highlight the free/busy days.

You can use the resource calendar view to to display multiple resources as columns side-by-side. You can use it to schedule events, tasks and reservations for multiple resources (locations, rooms, cars, tools, production lines, employees, shift workers, etc.). If you need to scheduler tasks or appointments for multiple workers (such as car mechanics, doctors, hairdressers), you can use the resource calendar to manage shifts and location assignments of your employees.

The library includes a smart date picker component that lets you change a date of the current view and also provides a quick availability preview using the free/busy highlighting feature.

You can use the calendar/scheduler components with any kind of backend (such as PHP, ASP.NET Core, Java/Spring, Node.js, etc.). The components communicate with the backend using a REST API which returns data in JSON format. The server-side part of your application lets you store the data in a database (such as MySQL, PostgreSQL or SQL Server) and perform additional calculations and apply business rules.

To see how to use the Scheduler component in React, you can check the React Scheduler with Horizontal Timeline (Open-Source) tutorial which describes the steps needed for integration in your React application. To learn how to integrate multiple calendar components into a more complex view, see the React Calendar with Day/Week/Month Views (Open-Source) tutorial.

The Angular calendar component integrates well with Angular 12+ applications (it uses the Ivy engine). In Angular, add the <DayPilotCalendar> component to the template. Use the [config] attribute to load the configuration data and the [events] attribute to load calendar event data. Angular detects changes automatically and updates the component if needed. For a more detailed guide, please see the Angular Calendar: Day/Week/Month Views (Open-Source) tutorial.

In Vue, there is also a special component available that lets you add a calendar to your application. See the Vue.js Weekly Calendar Tutorial (Open-Source) tutorial to learn more.

If you prefer vanilla JavaScript, you can start using the components by simply importing the daypilot-all.min.js file. Add a <div> placeholder and a short initialization script and your JavaScript calendar is ready for display. To learn how to integrate the JavaScript calendar with an ASP.NET Core or PHP backend (REST API), please see the HTML5/JavaScript Event Calendar (Open-Source) tutorial.

Angular Scheduler: CSS Themes
Angular Scheduler: CSS Themes
How to change the Angular Scheduler component appearance using a CSS theme. You can use one of the predefined themes or create your own theme using an online tool.
Improve Angular Scheduler Performance using Lazy Loading (Code Splitting)
Improve Angular Scheduler Performance using Lazy Loading (Code Splitting)
Use Angular lazy loading feature to improve the initial load time of your Scheduler application.
Vue Date Picker with Free/Busy Highlighting (Open-Source)
Vue Date Picker with Free/Busy Highlighting (Open-Source)
Use the Vue date picker component (Navigator) to change the current date. The date picker can highlight dates that already have events or are not available.
JavaScript Scheduler: Event Types
JavaScript Scheduler: Event Types
How to define your own Scheduler event types and customize the appearance. You can change the event type using a context menu or a modal dialog.
JavaScript Scheduler: Pushing Existing Events Back (Drag and Drop)
JavaScript Scheduler: Pushing Existing Events Back (Drag and Drop)
How to configure the JavaScript Scheduler to automatically move existing events later when a new event is dragged and dropped, to avoid overlaps.
Next.js Monthly Calendar (Open-Source)
Next.js Monthly Calendar (Open-Source)
Learn how to build a customized monthly calendar UI in Next.js 16 using the open-source DayPilot scheduling library.
Angular Calendar: Date Switching
Angular Calendar: Date Switching
How to integrate Angular event calendar component with a date picker and navigation buttons for changing the visible week.
React Scheduler: Rendering JSX in Events
React Scheduler: Rendering JSX in Events
How to render custom JSX in events displayed by the React Scheduler component.
JavaScript Date Picker: Using Diagonal Cell Split to Show Partial Free/Busy State
JavaScript Date Picker: Using Diagonal Cell Split to Show Partial Free/Busy State
How to use diagonal cell overlays in a JavaScript date picker to highlight full and partial day occupancy, common in hospitality reservation and availability views.
Angular Date Picker with Drag & Drop Range Selection (Open-Source)
Angular Date Picker with Drag & Drop Range Selection (Open-Source)
How to activate the free-hand date range selection mode in the Angular date picker component (Navigator).
React Resource Calendar with Editable Columns (Open-Source)
React Resource Calendar with Editable Columns (Open-Source)
How to use the open-source React resource calendar component to create a scheduling application for multiple groups of resources (locations, people, tools). Add a date picker and next/previous buttons that let users change the visible date.
Vue Monthly Calendar/Scheduler (Open-Source)
Vue Monthly Calendar/Scheduler (Open-Source)
How to create a monthly calendar/scheduler view for planning events, tasks, and reminders in Vue. The downloadable Vue project uses the open-source DayPilot Lite library.
Angular Scheduler: Highlighting Holidays
Angular Scheduler: Highlighting Holidays
Angular tutorial that shows how to highlight global and resource-specific holidays in the Angular Scheduler UI component.
Angular Calendar: How to Use CSS Themes (Open-Source)
Angular Calendar: How to Use CSS Themes (Open-Source)
Angular application that shows how to apply a custom CSS theme to the calendar component and change it on the fly.
React Calendar with Date Picker (Open-Source)
React Calendar with Date Picker (Open-Source)
How to use a popup date picker to select a date displayed by the React Calendar component.
React Scheduler with Horizontal Timeline (Open-Source)
React Scheduler with Horizontal Timeline (Open-Source)
A lightweight, open-source React Scheduler component with a horizontal timeline, drag-and-drop support, customizable appearance, and smooth performance for large data sets.
JavaScript Scheduler: Use Diagonally Split Cells for Check-In/Check-Out
JavaScript Scheduler: Use Diagonally Split Cells for Check-In/Check-Out
Learn how to modify the reservation edges to split the start and end cell diagonally. This provides a visual hint that the check-in and check-out days are only partially occupied.
Angular Calendar with Undo/Redo (Open-Source)
Angular Calendar with Undo/Redo (Open-Source)
This tutorial shows how to implement undo/redo functionality the for the open-source Angular Calendar component.
React Monthly Calendar Tutorial (Open-Source)
React Monthly Calendar Tutorial (Open-Source)
React application that displays a monthly event calendar. Calendar events use custom background to show event type. A context menu allows deleting events and changing color.
 How to Use CSS Themes with the React Scheduler Component
How to Use CSS Themes with the React Scheduler Component
Learn how to change a React Scheduler CSS theme, create and apply your own theme and override individual styles.
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