Accessibility Features Overview
NOTE
The overall accessibility level of your application depends on the Calendar features you use.
| Accessibility Requirement | Support Level |
|---|---|
| Right-to-Left Support | |
| Keyboard Navigation Support | |
| Screen Reader Support | |
| Contrast Color Theme | |
| Mobile Device Support | |
| Lighthouse Accessibility Validation | |
| Axe Accessibility Validation | |
| WAVE Accessibility Validation | |
| Section 508 Support | |
| WCAG 2.x Support |
- - All component features meet the requirement
- - Some component features may not meet the requirement
- - Accessibility requirement is not supported
Accessibility Standards Compliance
The Calendar component complies to all Section 508 and WCAG 2.x standards criteria except the following:
| Section 508 criteria | WCAG 2.x criteria | Exception description |
|---|---|---|
| - | 1.3.1 Info and Relationships (Level A) | Calendar does not pronounce selected range in multiselect mode. |
| - | 4.1.2 Name, Role, Value (Level A) | The validation state and error message in Calendar are not pronounced after a value change or when the control is focused. |
Keyboard Navigation
A user can use the following keys to interact with the Calendar component:
| Key | Action |
|---|---|
| ← → ↑ ↓ | Moves focus to the day nearby. |
| Page Up or Ctrl + ← | Displays the previous month. |
| Page Down or Ctrl + → | Displays the next month. |
| Enter | Selects the focused day. |
| Ctrl + ↑ | Increases zoomLevel. |
| Ctrl + ↓ | Decreases zoomLevel. |
| Home | Moves focus to the first date in the view. |
| End | Moves focus to the last date in the view. |
Use the registerKeyHandler(key, handler) method to implement a custom handler for a key.
jQuery
JavaScript
function registerKeyHandlers () {
const calendar = $("#calendarContainer").dxCalendar("instance");
calendar.registerKeyHandler("backspace", function(e) {
// The argument "e" contains information on the event
});
calendar.registerKeyHandler("space", function(e) {
// ...
});
}Angular
TypeScript
import { ..., ViewChild, AfterViewInit } from '@angular/core';
import { DxCalendarModule, DxCalendarComponent } from 'devextreme-angular';
// ...
export class AppComponent implements AfterViewInit {
@ViewChild(DxCalendarComponent, { static: false }) calendar: DxCalendarComponent;
// Prior to Angular 8
// @ViewChild(DxCalendarComponent) calendar: DxCalendarComponent;
ngAfterViewInit () {
this.calendar.instance.registerKeyHandler('backspace', function(e) {
// The argument "e" contains information on the event
});
this.calendar.instance.registerKeyHandler('space', function(e) {
// ...
});
}
}
@NgModule({
imports: [
// ...
DxCalendarModule
],
// ...
})Vue
<template>
<DxCalendar :ref="myCalendarRef" />
</template>
<script>
import 'devextreme/dist/css/dx.light.css';
import DxCalendar from 'devextreme-vue/calendar';
const myCalendarRef = 'my-calendar';
export default {
components: {
DxCalendar
},
data() {
return {
myCalendarRef
}
},
computed: {
calendar: function() {
return this.$refs[myCalendarRef].instance;
}
},
mounted: function() {
this.calendar.registerKeyHandler('backspace', function(e) {
// The argument "e" contains information on the event
});
this.calendar.registerKeyHandler('space', function(e) {
// ...
});
}
}
</script>React
App.js
import React from 'react';
import 'devextreme/dist/css/dx.light.css';
import { Calendar } from 'devextreme-react/calendar';
class App extends React.Component {
constructor(props) {
super(props);
this.calendarRef = React.createRef();
}
render() {
return (
<Calendar ref={this.calendarRef} />
);
}
get calendar() {
return this.calendarRef.current.instance;
}
componentDidMount() {
this.calendar.registerKeyHandler('backspace', function(e) {
// The argument "e" contains information on the event
});
this.calendar.registerKeyHandler('space', function(e) {
// ...
});
}
}
export default App;Screen Reader Support
The Calendar component supports screen readers and complies to WAI-ARIA standards.
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