Accessibility Features Overview
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 NumberBox 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 NumberBox component:
Key | Action |
---|---|
↑ or mouse wheel up | Increases the UI component value by a step. |
↓ or mouse wheel down | Decreases the UI component value by a step. |
Use the registerKeyHandler(key, handler) method to implement a custom handler for a key.
- import { ..., ViewChild, AfterViewInit } from '@angular/core';
- import { DxNumberBoxModule, DxNumberBoxComponent } from 'devextreme-angular';
- // ...
- export class AppComponent implements AfterViewInit {
- @ViewChild(DxNumberBoxComponent, { static: false }) numberBox: DxNumberBoxComponent;
- // Prior to Angular 8
- // @ViewChild(DxNumberBoxComponent) numberBox: DxNumberBoxComponent;
- ngAfterViewInit () {
- this.numberBox.instance.registerKeyHandler('backspace', function(e) {
- // The argument "e" contains information on the event
- });
- this.numberBox.instance.registerKeyHandler('space', function(e) {
- // ...
- });
- }
- }
- @NgModule({
- imports: [
- // ...
- DxNumberBoxModule
- ],
- // ...
- })
Screen Reader Support
The NumberBox component supports screen readers and complies to WAI-ARIA standards.
To improve accessibility, use the inputAttr property to specify aria-label for the component. You do not need to specify aria-label
if you use the label option.
If you have technical questions, please create a support ticket in the DevExpress Support Center.