Accessibility Features Overview
NOTE
The overall accessibility level of your application depends on the Form features that 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 Form component complies to all Section 508 and WCAG 2.x standards criteria.
Keyboard Navigation
A user can use the following keys to interact with the Form component:
Key | Action |
---|---|
Shift + Tab | Sets focus to the previous item. |
Tab | Sets focus to the next item. |
Interacting with Form items depends on the type of the item.
Use the registerKeyHandler(key, handler) method to implement a custom handler for a key.
jQuery
JavaScript
function registerKeyHandlers () { const form = $("#formContainer").dxForm("instance"); form.registerKeyHandler("backspace", function(e) { // The argument "e" contains information on the event }); form.registerKeyHandler("space", function(e) { // ... }); }
Angular
TypeScript
import { ..., ViewChild, AfterViewInit } from '@angular/core'; import { DxFormModule, DxFormComponent } from 'devextreme-angular'; // ... export class AppComponent implements AfterViewInit { @ViewChild(DxFormComponent, { static: false }) form: DxFormComponent; // Prior to Angular 8 // @ViewChild(DxFormComponent) form: DxFormComponent; ngAfterViewInit () { this.form.instance.registerKeyHandler('backspace', function(e) { // The argument "e" contains information on the event }); this.form.instance.registerKeyHandler('space', function(e) { // ... }); } } @NgModule({ imports: [ // ... DxFormModule ], // ... })
Vue
<template> <DxForm :ref="myFormRef" /> </template> <script> import 'devextreme/dist/css/dx.light.css'; import DxForm from 'devextreme-vue/form'; const myFormRef = 'my-form'; export default { components: { DxForm }, data() { return { myFormRef } }, computed: { form: function() { return this.$refs[myFormRef].instance; } }, mounted: function() { this.form.registerKeyHandler('backspace', function(e) { // The argument "e" contains information on the event }); this.form.registerKeyHandler('space', function(e) { // ... }); } } </script>
React
App.js
import React from 'react'; import 'devextreme/dist/css/dx.light.css'; import { Form } from 'devextreme-react/form'; class App extends React.Component { constructor(props) { super(props); this.formRef = React.createRef(); } render() { return ( <Form ref={this.formRef} /> ); } get form() { return this.formRef.current.instance; } componentDidMount() { this.form.registerKeyHandler('backspace', function(e) { // The argument "e" contains information on the event }); this.form.registerKeyHandler('space', function(e) { // ... }); } } export default App;
Screen Reader Support
The Form component supports screen readers and complies to WAI-ARIA standards.
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