Accessibility Features Overview
NOTE
  The overall accessibility level of your application depends on the Switch 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 Switch 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) | 1.4.3 Contrast (Minimum) (Level AA) 1.4.11 Non-text Contrast (Level AA 2.1 and 2.2) | Switch does not support Windows High Contrast themes. | 
The component also complies with the European Accessibility Act (EAA) and Americans with Disabilities Act (ADA) directives.
Keyboard Navigation
A user can use the following keys to interact with the Switch component:
| Key | Action | 
|---|---|
| Enter or Space | Changes the UI component value. | 
| → | Changes the switch state to "On". | 
| ← | Changes the switch state to "Off". | 
Use the registerKeyHandler(key, handler) method to implement a custom handler for a key.
jQuery
JavaScript
function registerKeyHandlers () {
    const switch = $("#switchContainer").dxSwitch("instance");
    switch.registerKeyHandler("backspace", function(e) {
        // The argument "e" contains information on the event
    });
    switch.registerKeyHandler("space", function(e) {
        // ...
    });
}Angular
TypeScript
import { ..., ViewChild, AfterViewInit } from '@angular/core';
import { DxSwitchModule, DxSwitchComponent } from 'devextreme-angular';
// ...
export class AppComponent implements AfterViewInit {
    @ViewChild(DxSwitchComponent, { static: false }) switch: DxSwitchComponent;
    // Prior to Angular 8
    // @ViewChild(DxSwitchComponent) switch: DxSwitchComponent;
    ngAfterViewInit () {
        this.switch.instance.registerKeyHandler('backspace', function(e) {
            // The argument "e" contains information on the event
        });
        this.switch.instance.registerKeyHandler('space', function(e) {
            // ...
        });
    }
}
@NgModule({
    imports: [
        // ...
        DxSwitchModule
    ],
    // ...
})Vue
<template>
    <DxSwitch :ref="mySwitchRef" />
</template>
<script>
import 'devextreme/dist/css/dx.light.css';
import DxSwitch from 'devextreme-vue/switch';
const mySwitchRef = 'my-switch';
export default {
    components: {
        DxSwitch
    },
    data() {
        return {
            mySwitchRef
        }
    },
    computed: {
        switch: function() {
            return this.$refs[mySwitchRef].instance;
        }
    },
    mounted: function() {
        this.switch.registerKeyHandler('backspace', function(e) {
            // The argument "e" contains information on the event
        });
        this.switch.registerKeyHandler('space', function(e) {
            // ...
        });
    }
}
</script>React
App.js
import React from 'react';
import 'devextreme/dist/css/dx.light.css';
import { Switch } from 'devextreme-react/switch';
class App extends React.Component {
    constructor(props) {
        super(props);
        this.switchRef = React.createRef();
    }
    render() {
        return (
            <Switch ref={this.switchRef} />
        );
    }
    get switch() {
        return this.switchRef.current.instance();
    }
    componentDidMount() {
        this.switch.registerKeyHandler('backspace', function(e) {
            // The argument "e" contains information on the event
        });
        this.switch.registerKeyHandler('space', function(e) {
            // ...
        });
    }
}
export default App;Screen Reader Support
The Switch component supports screen readers and complies to WAI-ARIA standards.
        
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