Methods

The appointment; should have the same structure as objects in the dataSource.

beginUpdate()

Postpones rendering that can negatively affect performance until the endUpdate() method is called.

The beginUpdate() and endUpdate() methods reduce the number of renders in cases where extra rendering can negatively affect performance.

defaultOptions(rule)

Specifies the device-dependent default configuration properties for this component.

Parameters:

rule:

The component's default device properties.

Object structure:

Name	Type	Description
device	Device \| Function	Device parameters. When you specify a function, get information about the current device from the argument. Return true if the properties should be applied to the device.
options	Object	Options to be applied.

Name

Type

Description

device

Device

|

Function

Device parameters.
When you specify a function, get information about the current device from the argument. Return true if the properties should be applied to the device.

options

Options to be applied.

defaultOptions is a static method that the UI component class supports. The following code demonstrates how to specify default properties for all instances of the Scheduler UI component in an application executed on the desktop.

jQuery

JavaScript

DevExpress.ui.dxScheduler.defaultOptions({ 
    device: { deviceType: "desktop" },
    options: {
        // Here go the Scheduler properties
    }
});

Angular

TypeScript

import Scheduler, { Properties } from "devextreme/ui/scheduler";
// ...
export class AppComponent {
    constructor () {
        Scheduler.defaultOptions<Properties>({
            device: { deviceType: "desktop" },
            options: {
                // Here go the Scheduler properties
            }
        });
    }
}

Vue

<template>
    <div>
        <DxScheduler id="scheduler1" />
        <DxScheduler id="scheduler2" />
    </div>
</template>
<script>
import DxScheduler from "devextreme-vue/scheduler";
import Scheduler from "devextreme/ui/scheduler";

Scheduler.defaultOptions({
    device: { deviceType: "desktop" },
    options: {
        // Here go the Scheduler properties
    }
});

export default {
    components: {
        DxScheduler
    }
}
</script>

React

import dxScheduler from "devextreme/ui/scheduler";
import Scheduler from "devextreme-react/scheduler";

dxScheduler.defaultOptions({
    device: { deviceType: "desktop" },
    options: {
        // Here go the Scheduler properties
    }
});

export default function App() {
    return (
        <div>
            <Scheduler id="scheduler1" />
            <Scheduler id="scheduler2" />
        </div>
    )
}

deleteAppointment(appointment)

Deletes an appointment from the timetable and its object from the data source.

Parameters:

appointment:

An appointment object from the dataSource.

If you delete a recurring appointment from the data source, all its occurrences are also deleted from the timetable:

jQuery

JavaScript

$(function() {
    var appointments = [{
        text: "Website Re-Design Plan",
        startDate: new Date(2018, 4, 25, 9, 00),
        endDate: new Date(2018, 4, 25, 9, 30),
        recurrenceRule: "FREQ=DAILY;COUNT=10"
    }, 
    // ...
    ];

    var scheduler = $("#schedulerContainer").dxScheduler({
        dataSource: appointments,
        currentDate: new Date(2018, 4, 25)
    }).dxScheduler("instance");

    $("#deleteButton").dxButton({
        text: "Delete",
        onClick: function () {
            scheduler.deleteAppointment(appointments[0]);
        }
    });
});

Angular

app.component.html

app.component.ts

app.service.ts

app.module.ts

<dx-button
    text="Delete"
    (onClick)="deleteAppointment()">
</dx-button>
<dx-scheduler
    [(dataSource)]="appointments"
    [currentDate]="currentDate">
</dx-scheduler>

import { Component, ViewChild } from "@angular/core";
import { Appointment, Service } from './app.service';
import { DxSchedulerComponent } from "devextreme-angular";
@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})
export class AppComponent  {
    @ViewChild(DxSchedulerComponent, { static: false }) scheduler: DxSchedulerComponent;
    // Prior to Angular 8
    // @ViewChild(DxSchedulerComponent) scheduler: DxSchedulerComponent;
    currentDate: Date = new Date(2018, 4, 25);
    appointments: Appointment[];

    constructor(service: Service) {
        this.appointments = service.getAppointments();
    }

    deleteAppointment() {
        this.scheduler.instance.deleteAppointment(this.appointments[0]);
    }
}

import { Injectable } from "@angular/core";

export class Appointment {
    text: string;
    startDate: Date;
    endDate: Date;
    recurrenceRule?: string;
}

let appointments: Appointment[] = [{
    text: "Website Re-Design Plan",
    startDate: new Date(2018, 4, 25, 9, 0),
    endDate: new Date(2018, 4, 25, 9, 30),
    recurrenceRule: "FREQ=DAILY;COUNT=10"
}, 
// ...
];

@Injectable()
export class Service {
    getAppointments(): Appointment[] {
        return appointments;
    }
}

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';

import { 
    DxButtonModule, 
    DxSchedulerModule
} from "devextreme-angular";

import { Service } from './app.service';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxButtonModule,
        DxSchedulerModule
    ],
    providers: [
        Service
    ],
    bootstrap: [AppComponent]
})
export class AppModule { }

Vue

App.vue

data.js

<template>
    <div>
        <DxButton 
            text="Delete" 
            @click="deleteAppointment" />
        <DxScheduler :ref="schedulerRef"
            :data-source="dataSource"
            :current-date="currentDate" />
    </div>
</template>
<script>
import 'devextreme/dist/css/dx.light.css';

import DxScheduler from 'devextreme-vue/scheduler';
import DxButton from 'devextreme-vue/button';
import { appointments } from './data.js';

const schedulerRef = "scheduler";

export default {
    components: {
        DxScheduler,
        DxButton
    },
    data() {
        return {
            schedulerRef,
            currentDate: new Date(2018, 4, 25),
            dataSource: appointments
        };
    },
    methods: {
        deleteAppointment() {
            this.scheduler.deleteAppointment(appointments[0]);
        } 
    },
    computed: {
        scheduler: function() {
            return this.$refs[schedulerRef].instance;
        }
    }
};
</script>

export const appointments = [{
    text: "Website Re-Design Plan",
    startDate: new Date(2018, 4, 25, 9, 0),
    endDate: new Date(2018, 4, 25, 9, 30),
    recurrenceRule: "FREQ=DAILY;COUNT=10"
}, 
// ...
];

React

App.js

data.js

import React from 'react';
import 'devextreme/dist/css/dx.light.css';
import Scheduler from 'devextreme-react/scheduler';
import Button from 'devextreme-react/button';
import { appointments } from './data.js';

const currentDate = new Date(2018, 4, 25);

class App extends React.Component {
    constructor(props) {
        super(props);

        this.schedulerRef = React.createRef();

        this.deleteAppointment = () => {
            this.scheduler.deleteAppointment(appointments[0]);
        }
    }

    get scheduler() {
        return this.schedulerRef.current.instance;
    }

    render() {
        return (
            <div>
                <Button text="Delete" onClick={this.deleteAppointment} />
                <Scheduler ref={this.schedulerRef}
                    dataSource={appointments}
                    defaultCurrentDate={currentDate} />
            </div>
        );
    }
}
export default App;

export const appointments = [{
    text: "Website Re-Design Plan",
    startDate: new Date(2018, 4, 25, 9, 0),
    endDate: new Date(2018, 4, 25, 9, 30),
    recurrenceRule: "FREQ=DAILY;COUNT=10"
}, 
// ...
];

deleteRecurrence(appointment, date, recurrenceEditMode)

Deletes a recurring appointment occurrence.

Parameters:

appointmentData:

The initial appointment.

date:

|

A date for which to delete a recurrence.

recurrenceEditMode:

RecurrenceEditMode

An edit mode for recurring appointments.

jQuery

index.js

$(function() {
    const appointments = [{
        text: "Website Re-Design Plan",
        startDate: new Date(2018, 4, 25, 9, 00),
        endDate: new Date(2018, 4, 25, 9, 30),
        recurrenceRule: "FREQ=DAILY;COUNT=10"
    }, 
    // ...
    ];

    const scheduler = $("#schedulerContainer").dxScheduler({
        dataSource: appointments,
        // ...
        onAppointmentClick: function(e) {
            if (condition){
                e.component.deleteRecurrence(e.appointmentData, e.targetedAppointmentData.startDate, 'occurrence');
            }
        }
    }).dxScheduler("instance");
});

Angular

app.component.html

app.component.ts

app.service.ts

app.module.ts

<dx-scheduler ...
    [dataSource]="appointments"
    (onAppointmentClick)="deleteRecurrence($event)">
</dx-scheduler>

import { Component } from "@angular/core";
import { Appointment, Service } from './app.service';
@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})
export class AppComponent  {
    appointments: Appointment[];

    constructor(service: Service) {
        this.appointments = service.getAppointments();
    }

    deleteAppointment(e) {
        e.component.deleteRecurrence(e.appointmentData, e.targetedAppointmentData.startDate, 'occurrence');
    }
}

import { Injectable } from "@angular/core";

export class Appointment {
    text: string;
    startDate: Date;
    endDate: Date;
    recurrenceRule?: string;
}

let appointments: Appointment[] = [{
    text: "Website Re-Design Plan",
    startDate: new Date(2018, 4, 25, 9, 0),
    endDate: new Date(2018, 4, 25, 9, 30),
    recurrenceRule: "FREQ=DAILY;COUNT=10"
}, 
// ...
];

@Injectable()
export class Service {
    getAppointments(): Appointment[] {
        return appointments;
    }
}

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';

import { DxSchedulerModule } from "devextreme-angular";

import { Service } from './app.service';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxSchedulerModule
    ],
    providers: [
        Service
    ],
    bootstrap: [AppComponent]
})
export class AppModule { }

Vue

App.vue

data.js

<template>
    <DxScheduler ...
        :data-source="dataSource"
        @appointment-click="deleteRecurrence"
    />
</template>

<script>
import 'devextreme/dist/css/dx.light.css';
import DxScheduler from 'devextreme-vue/scheduler';
import { appointments } from './data.js';

export default {
    components: {
        DxScheduler
    },
    data() {
        return {
            dataSource: appointments
        };
    },
    methods: {
        deleteRecurrence(e) {
            e.component.deleteRecurrence(e.appointmentData, e.targetedAppointmentData.startDate, 'occurrence');
        } 
    }
};
</script>

export const appointments = [{
    text: "Website Re-Design Plan",
    startDate: new Date(2018, 4, 25, 9, 0),
    endDate: new Date(2018, 4, 25, 9, 30),
    recurrenceRule: "FREQ=DAILY;COUNT=10"
}, 
// ...
];

React

App.js

data.js

import React, { useCallback } from 'react';
import Scheduler from 'devextreme-react/scheduler';
import { appointments } from './data.js';

function App() {
    const deleteRecurrence = useCallback((e) => { 
        e.component.deleteRecurrence(e.appointmentData, e.targetedAppointmentData.startDate, 'occurrence');
    }, []);

    return (
        <Scheduler ...
            dataSource={appointments}
            onAppointmentClick={deleteRecurrence} 
        />
    );
}

export default App;

export const appointments = [{
    text: "Website Re-Design Plan",
    startDate: new Date(2018, 4, 25, 9, 0),
    endDate: new Date(2018, 4, 25, 9, 30),
    recurrenceRule: "FREQ=DAILY;COUNT=10"
}, 
// ...
];

dispose()

Disposes of all the resources allocated to the Scheduler instance.

After calling this method, remove the DOM element associated with the UI component:

JavaScript

$("#myScheduler").dxScheduler("dispose");
$("#myScheduler").remove();

Use this method only if the UI component was created with jQuery or pure JavaScript. In Angular, Vue, and React, use conditional rendering:

Angular

app.component.html

<dx-scheduler ...
    *ngIf="condition">
</dx-scheduler>

Vue

App.vue

<template>
    <DxScheduler ...
        v-if="condition">
    </DxScheduler>
</template>

<script>
import DxScheduler from 'devextreme-vue/scheduler';

export default {
    components: {
        DxScheduler
    }
}
</script>

React

App.js

import React from 'react';

import Scheduler from 'devextreme-react/scheduler';

function DxScheduler(props) {
    if (!props.shouldRender) {
        return null;
    }

    return (
        <Scheduler ... >    
        </Scheduler>
    );
}

class App extends React.Component {
    render() {
        return (
            <DxScheduler shouldRender="condition" />
        );
    }
}
export default App;

element()

Gets the root UI component element.

Return Value:

HTMLElement | jQuery

An HTML element or a jQuery element when you use jQuery.

endUpdate()

Refreshes the UI component after a call of the beginUpdate() method.

The beginUpdate() and endUpdate() methods reduce the number of renders in cases where extra rendering can negatively affect performance.

focus()

Sets focus on the UI component.

getDataSource()

Gets the DataSource instance.

Return Value:

DataSource

The DataSource instance.

NOTE

This method returns the DataSource instance even if the UI component's dataSource property was given a simple array.

View on GitHub

getEndViewDate()

Gets the current view's end date.

Return Value:

The view's end date.

getInstance(element)

Gets the instance of a UI component found using its DOM node.

Parameters:

element:

Element

|

jQuery

The UI component's container.

Return Value:

The UI component's instance.

getInstance is a static method that the UI component class supports. The following code demonstrates how to get the Scheduler instance found in an element with the myScheduler ID:

// Modular approach
import Scheduler from "devextreme/ui/scheduler";
...
let element = document.getElementById("myScheduler");
let instance = Scheduler.getInstance(element) as Scheduler;

// Non-modular approach
let element = document.getElementById("myScheduler");
let instance = DevExpress.ui.dxScheduler.getInstance(element);

getStartViewDate()

Gets the current view's start date.

Return Value:

The view's start date.

hideAppointmentPopup(saveChanges)

Hides an appointment details form.

Parameters:

saveChanges:

Boolean

| undefined

Specifies whether to save changes.

hideAppointmentTooltip()

Hides an appointment's or cell overflow indicator's tooltip.

instance()

Gets the UI component's instance. Use it to access other methods of the UI component.

Return Value:

This UI component's instance.

off(eventName)

Detaches all event handlers from a single event.

Parameters:

eventName:

The event's name.

Return Value:

The object for which this method is called.

off(eventName, eventHandler)

Detaches a particular event handler from a single event.

Parameters:

eventName:

The event's name.

eventHandler:

Function

The event's handler.

Return Value:

The object for which this method is called.

on(eventName, eventHandler)

Subscribes to an event.

Parameters:

eventName:

The event's name.

eventHandler:

Function

The event's handler.

Return Value:

The object for which this method is called.

Use this method to subscribe to one of the events listed in the Events section.

on(events)

Subscribes to events.

Parameters:

events:

Events with their handlers: { "eventName1": handler1, "eventName2": handler2, ...}

Return Value:

The object for which this method is called.

Use this method to subscribe to several events with one method call. Available events are listed in the Events section.

option()

Gets all UI component properties.

Return Value:

The UI component's properties.

option(optionName)

Gets the value of a single property.

Parameters:

optionName:

The property's name or full path.

Return Value: any

This property's value.

option(optionName, optionValue)

Updates the value of a single property.

Parameters:

optionName:

The property's name or full path.

optionValue: any

This property's new value.

option(options)

Updates the values of several properties.

Parameters:

options:

Options with their new values.

repaint()

Repaints the UI component without reloading data. Call it to update the UI component's markup.

Use the DataSource reload method to reload data in Scheduler. To get a DataSource, you can call the getDataSource() method. Change the dataSource property of the corresponding resources item if you need to update resource data.

resetOption(optionName)

Resets a property to its default value.

Parameters:

optionName:

A property's name.

scrollTo(date, group, allDay)

Scrolls the current view to a specified position. Available for all views except "agenda". You should specify the height property to use this method.

Parameters:

date:

A date and time to which to scroll.

group:

| undefined

If appointments are grouped by resources, specifies a group ID (optional).

allDay:

Boolean

| undefined

If true, scrolls the view to the all-day panel of the specified group. Applies only if the all-day panel is visible.

The following example shows how to use this method:

// Scroll to January 14, 2021
scrollTo(new Date(2021, 0, 14));
// Scroll to the second group at 5:30 p.m. on January 14, 2021
scrollTo(new Date(2021, 0, 14, 17, 30), {groupId: 2})
// Scroll to the all-day panel of the second group
scrollTo(new Date(2021, 0, 14, 17, 30), {groupId: 2}, true);

NOTE

If you need to navigate to a date outside the current view, use the currentDate property instead.

scrollToTime(hours, minutes, date)

Use the scrollTo(dategroupallDay) method instead.

Scrolls the current view to a specific day and time.

Parameters:

hours:

Number

An hour component.

minutes:

Number

A minute component.

date:

| undefined

A date component.

If the specified date is outside the current date range, the method scrolls the view to the specified time.

NOTE

This method requires that the markup is already rendered. To scroll the Scheduler at launch, call this method in the onContentReady function.

NOTE

This method does not work in the month view.

showAppointmentPopup(appointmentData, createNewAppointment, currentAppointmentData)

Shows the appointment details form.

Parameters:

appointmentData:

| undefined

The initial appointment.

createNewAppointment:

Boolean

| undefined

Specifies whether a new appointment is created when editing is finished.

currentAppointmentData:

| undefined

The appointment's data object.
The difference between this and appointmentData fields is explained in the onAppointmentClick description.

If invoked without parameters, the method shows a new appointment window. Its start and end dates are prepopulated in accordance with the currentDate value. The default appointment duration is 30 minutes.

showAppointmentTooltip(appointmentData, target, currentAppointmentData)

Shows a tooltip for a target element.

Parameters:

appointmentData:

The initial appointment.

target:

|

Element

|

jQuery

The target element.

currentAppointmentData:

| undefined

The appointment's data object.
The difference between this and appointmentData fields is explained in the onAppointmentClick description.

updateAppointment(target, appointment)

Updates an appointment.

Parameters:

target:

The appointment to be updated.

appointment:

The appointment with updated data.