Accessibility Features Overview
NOTE
The overall accessibility level of your application depends on the Tabs 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 Tabs 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) 1.4.13 Content on Hover or Focus (Level AA 2.1 only) |
The component does not supply information about a focused tab item. |
Keyboard Navigation
A user can use the following keys to interact with the Tabs component:
| Key | Action |
|---|---|
| ← ↑ or PageUp | Moves focus to the previous tab. |
| → ↓ or PageDown | Moves focus to the next tab. |
| Home | Moves focus to the first tab. |
| End | Moves focus to the last tab. |
| Enter or Space | Selects the tab. Available only if selectionMode is set to 'multiple'. |
| Shift + Mouse Wheel | Scrolls the tabs left/right if the scrollingEnabled property is true. |
Use the registerKeyHandler(key, handler) method to implement a custom handler for a key.
jQuery
JavaScript
function registerKeyHandlers () {
const tabs = $("#tabsContainer").dxTabs("instance");
tabs.registerKeyHandler("backspace", function(e) {
// The argument "e" contains information on the event
});
tabs.registerKeyHandler("space", function(e) {
// ...
});
}Angular
TypeScript
import { ..., ViewChild, AfterViewInit } from '@angular/core';
import { DxTabsModule, DxTabsComponent } from 'devextreme-angular';
// ...
export class AppComponent implements AfterViewInit {
@ViewChild(DxTabsComponent, { static: false }) tabs: DxTabsComponent;
// Prior to Angular 8
// @ViewChild(DxTabsComponent) tabs: DxTabsComponent;
ngAfterViewInit () {
this.tabs.instance.registerKeyHandler('backspace', function(e) {
// The argument "e" contains information on the event
});
this.tabs.instance.registerKeyHandler('space', function(e) {
// ...
});
}
}
@NgModule({
imports: [
// ...
DxTabsModule
],
// ...
})Vue
<template>
<DxTabs :ref="myTabsRef" />
</template>
<script>
import 'devextreme/dist/css/dx.light.css';
import DxTabs from 'devextreme-vue/tabs';
const myTabsRef = 'my-tabs';
export default {
components: {
DxTabs
},
data() {
return {
myTabsRef
}
},
computed: {
tabs: function() {
return this.$refs[myTabsRef].instance;
}
},
mounted: function() {
this.tabs.registerKeyHandler('backspace', function(e) {
// The argument "e" contains information on the event
});
this.tabs.registerKeyHandler('space', function(e) {
// ...
});
}
}
</script>React
App.js
import React from 'react';
import 'devextreme/dist/css/dx.light.css';
import { Tabs } from 'devextreme-react/tabs';
class App extends React.Component {
constructor(props) {
super(props);
this.tabsRef = React.createRef();
}
render() {
return (
<Tabs ref={this.tabsRef} />
);
}
get tabs() {
return this.tabsRef.current.instance;
}
componentDidMount() {
this.tabs.registerKeyHandler('backspace', function(e) {
// The argument "e" contains information on the event
});
this.tabs.registerKeyHandler('space', function(e) {
// ...
});
}
}
export default App;Screen Reader Support
The Tabs component supports screen readers and complies to WAI-ARIA standards.
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