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 meets a variety of Section 508 and WCAG 2.x compliance standards. Known exceptions:
Section 508 criteria | WCAG 2.x criteria | Exception description |
---|---|---|
501 (Web)(Software) 504.2 (Authoring Tool) 602.3 (Support Docs) |
1.3.1 Info and Relationships (Level A) | Calendar does not pronounce selected range in multiselect mode. |
501 (Web)(Software) 504.2 (Authoring Tool) 602.3 (Support Docs) |
1.4.3 Contrast (Minimum) (Level AA) 1.4.11 Non-text Contrast (Level AA 2.1 and 2.2) |
Calendar does not support Windows High Contrast themes. |
501 (Web)(Software) 504.2 (Authoring Tool) 602.3 (Support Docs) |
2.4.3 Focus Order (Level A) | Calendar does not focus on disabled dates. |
501 (Web)(Software) 504.2 (Authoring Tool) 602.3 (Support Docs) |
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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