The theme property (string) sets the CSS theme used by the JavaScript Calendar component.
Declaration
DayPilot.Calendar.themeDefault Value
"calendar_default"Notes
The theme name determines the CSS class prefix applied to the calendar markup.
Sample themes are included in the DayPilot package, and you can create custom themes using the DayPilot Theme Designer.
The DayPilot Pro for JavaScript download includes demo/themes/calendar_dark.css. Load this stylesheet and set this property to "calendar_dark". Setting the property does not load the stylesheet automatically.
Examples
JavaScript
Include the stylesheet once in the application, using the path where you copied the theme file:
<link rel="stylesheet" href="themes/calendar_dark.css">const calendar = new DayPilot.Calendar("dp", {
theme: "calendar_dark",
// ...
});
calendar.init();Angular
Set the theme in a typed configuration object for the Angular component. Copy calendar_dark.css to src/themes and load it from the application's global src/styles.css:
@import "./themes/calendar_dark.css";The standalone component imports DayPilotModule and binds the configuration in its template:
import {Component} from "@angular/core";
import {DayPilot, DayPilotModule} from "daypilot-pro-angular";
@Component({
selector: "app-dark-calendar",
standalone: true,
imports: [DayPilotModule],
template: `<daypilot-calendar [config]="config"></daypilot-calendar>`
})
export class DarkCalendarComponent {
config: DayPilot.CalendarConfig = {
theme: "calendar_dark",
startDate: "2026-10-12",
viewType: "Week",
events: [{id: 1, text: "Planning workshop", start: "2026-10-12T09:00:00", end: "2026-10-12T11:00:00"}]
};
}React
Pass the theme and data as individual props to the React component. Place the stylesheet in a themes directory beside this component and import it:
import {DayPilotCalendar} from "daypilot-pro-react";
import "./themes/calendar_dark.css";
export default function DarkCalendar() {
return (
<DayPilotCalendar
theme="calendar_dark"
startDate="2026-10-12"
viewType="Week"
events={[{id: 1, text: "Planning workshop", start: "2026-10-12T09:00:00", end: "2026-10-12T11:00:00"}]}
/>
);
}Vue
This single-file Vue component imports the stylesheet and passes the theme and data as individual props. Place the theme CSS in the adjacent themes directory. The stylesheet applies globally to the generated DayPilot elements.
<script setup>
import {DayPilotCalendar} from "daypilot-pro-vue";
import "./themes/calendar_dark.css";
const events = [{id: 1, text: "Planning workshop", start: "2026-10-12T09:00:00", end: "2026-10-12T11:00:00"}];
</script>
<template>
<DayPilotCalendar
theme="calendar_dark"
startDate="2026-10-12"
viewType="Week"
:events="events"
/>
</template>See Also
CSS Themes [doc.daypilot.org]
CSS [doc.daypilot.org]
Availability
Availability of this API item in DayPilot editions:
| Product | Lite | Pro |
|---|---|---|
| DayPilot for JavaScript |
DayPilot