DevExtreme Accessibility Compliance
DevExtreme component libraries meet a variety of WCAG and Section 508 compliance standards. To assess this demo’s accessibility level, click the Run AXE® Validation button to launch the AXE® web accessibility evaluation tool.
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Backend API
import React, { useCallback, useState } from 'react';
import Gallery from 'devextreme-react/gallery';
import CheckBox, { CheckBoxTypes } from 'devextreme-react/check-box';
import { gallery } from './data.ts';
const App = () => {
const [loop, setLoop] = useState(true);
const [slideShow, setSlideShow] = useState(true);
const [showNavButtons, setShowNavButtons] = useState(true);
const [showIndicator, setShowIndicator] = useState(true);
const onLoopChanged = useCallback((data: CheckBoxTypes.ValueChangedEvent) => {
setLoop(data.value);
}, [setLoop]);
const onSlideShowChanged = useCallback((data: CheckBoxTypes.ValueChangedEvent) => {
setSlideShow(data.value);
}, [setSlideShow]);
const onShowNavButtonsChanged = useCallback((data: CheckBoxTypes.ValueChangedEvent) => {
setShowNavButtons(data.value);
}, [setShowNavButtons]);
const onShowIndicatorChanged = useCallback((data: CheckBoxTypes.ValueChangedEvent) => {
setShowIndicator(data.value);
}, [setShowIndicator]);
return (
<div>
<div className="widget-container">
<Gallery
id="gallery"
dataSource={gallery}
height={300}
slideshowDelay={slideShow ? 2000 : 0}
loop={loop}
showNavButtons={showNavButtons}
showIndicator={showIndicator} />
</div>
<div className="options">
<div className="caption">Options</div>
<div className="option">
<CheckBox text="Loop mode" value={loop} onValueChanged={onLoopChanged} />
</div>
<div className="option">
<CheckBox text="Slide show" value={slideShow} onValueChanged={onSlideShowChanged} />
</div>
<div className="option">
<CheckBox text="Navigation buttons" value={showNavButtons} onValueChanged={onShowNavButtonsChanged} />
</div>
<div className="option">
<CheckBox text="Indicator" value={showIndicator} onValueChanged={onShowIndicatorChanged} />
</div>
</div>
</div>
);
};
export default App;
import React, { useCallback, useState } from 'react';
import Gallery from 'devextreme-react/gallery';
import CheckBox from 'devextreme-react/check-box';
import { gallery } from './data.js';
const App = () => {
const [loop, setLoop] = useState(true);
const [slideShow, setSlideShow] = useState(true);
const [showNavButtons, setShowNavButtons] = useState(true);
const [showIndicator, setShowIndicator] = useState(true);
const onLoopChanged = useCallback(
(data) => {
setLoop(data.value);
},
[setLoop],
);
const onSlideShowChanged = useCallback(
(data) => {
setSlideShow(data.value);
},
[setSlideShow],
);
const onShowNavButtonsChanged = useCallback(
(data) => {
setShowNavButtons(data.value);
},
[setShowNavButtons],
);
const onShowIndicatorChanged = useCallback(
(data) => {
setShowIndicator(data.value);
},
[setShowIndicator],
);
return (
<div>
<div className="widget-container">
<Gallery
id="gallery"
dataSource={gallery}
height={300}
slideshowDelay={slideShow ? 2000 : 0}
loop={loop}
showNavButtons={showNavButtons}
showIndicator={showIndicator}
/>
</div>
<div className="options">
<div className="caption">Options</div>
<div className="option">
<CheckBox
text="Loop mode"
value={loop}
onValueChanged={onLoopChanged}
/>
</div>
<div className="option">
<CheckBox
text="Slide show"
value={slideShow}
onValueChanged={onSlideShowChanged}
/>
</div>
<div className="option">
<CheckBox
text="Navigation buttons"
value={showNavButtons}
onValueChanged={onShowNavButtonsChanged}
/>
</div>
<div className="option">
<CheckBox
text="Indicator"
value={showIndicator}
onValueChanged={onShowIndicatorChanged}
/>
</div>
</div>
</div>
);
};
export default App;
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.tsx';
ReactDOM.render(
<App />,
document.getElementById('app'),
);
import type { IItemProps } from 'devextreme-react/gallery';
export const gallery: IItemProps[] = [
{
imageAlt: 'Image 1',
imageSrc: '../../../../images/gallery/1.jpg',
},
{
imageAlt: 'Image 2',
imageSrc: '../../../../images/gallery/2.jpg',
},
{
imageAlt: 'Image 3',
imageSrc: '../../../../images/gallery/3.jpg',
},
{
imageAlt: 'Image 4',
imageSrc: '../../../../images/gallery/4.jpg',
},
{
imageAlt: 'Image 5',
imageSrc: '../../../../images/gallery/5.jpg',
},
{
imageAlt: 'Image 6',
imageSrc: '../../../../images/gallery/6.jpg',
},
{
imageAlt: 'Image 7',
imageSrc: '../../../../images/gallery/7.jpg',
},
{
imageAlt: 'Image 8',
imageSrc: '../../../../images/gallery/8.jpg',
},
{
imageAlt: 'Image 9',
imageSrc: '../../../../images/gallery/9.jpg',
},
];
window.exports = window.exports || {};
window.config = {
transpiler: 'ts',
typescriptOptions: {
module: 'system',
emitDecoratorMetadata: true,
experimentalDecorators: true,
jsx: 'react',
},
meta: {
'react': {
'esModule': true,
},
'typescript': {
'exports': 'ts',
},
'devextreme/time_zone_utils.js': {
'esModule': true,
},
'devextreme/localization.js': {
'esModule': true,
},
'devextreme/viz/palette.js': {
'esModule': true,
},
'openai': {
'esModule': true,
},
},
paths: {
'npm:': 'https://unpkg.com/',
'bundles:': '../../../../bundles/',
'externals:': '../../../../bundles/externals/',
},
defaultExtension: 'js',
map: {
'ts': 'npm:plugin-typescript@8.0.0/lib/plugin.js',
'typescript': 'npm:typescript@4.2.4/lib/typescript.js',
'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js',
'react': 'npm:react@17.0.2/umd/react.development.js',
'react-dom': 'npm:react-dom@17.0.2/umd/react-dom.development.js',
'prop-types': 'npm:prop-types/prop-types.js',
'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js',
'luxon': 'npm:luxon@3.4.4/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign',
'devextreme': 'npm:devextreme@link:../../packages/devextreme/artifacts/npm/devextreme/cjs',
'devextreme-react': 'npm:devextreme-react@link:../../packages/devextreme-react/npm/cjs',
'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.2.5/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@4.1.54/dist/dx-gantt.js',
'@devextreme/runtime': 'npm:@devextreme/runtime@3.0.12',
'inferno': 'npm:inferno@7.4.11/dist/inferno.min.js',
'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js',
'inferno-create-element': 'npm:inferno-create-element@7.4.11/dist/inferno-create-element.min.js',
'inferno-dom': 'npm:inferno-dom/dist/inferno-dom.min.js',
'inferno-hydrate': 'npm:inferno-hydrate/dist/inferno-hydrate.min.js',
'inferno-clone-vnode': 'npm:inferno-clone-vnode/dist/inferno-clone-vnode.min.js',
'inferno-create-class': 'npm:inferno-create-class/dist/inferno-create-class.min.js',
'inferno-extras': 'npm:inferno-extras/dist/inferno-extras.min.js',
'devextreme-cldr-data': 'npm:devextreme-cldr-data@1.0.3',
// SystemJS plugins
'plugin-babel': 'npm:systemjs-plugin-babel@0.0.25/plugin-babel.js',
'systemjs-babel-build': 'npm:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js',
// Prettier
'prettier/standalone': 'npm:prettier@2.8.8/standalone.js',
'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js',
},
packages: {
'devextreme': {
defaultExtension: 'js',
},
'devextreme-react': {
main: 'index.js',
},
'devextreme/events/utils': {
main: 'index',
},
'devextreme/localization/messages': {
format: 'json',
defaultExtension: 'json',
},
'devextreme/events': {
main: 'index',
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js',
},
},
packageConfigPaths: [
'npm:@devextreme/*/package.json',
'npm:@devextreme/runtime@3.0.12/inferno/package.json',
],
babelOptions: {
sourceMaps: false,
stage0: true,
react: true,
},
};
System.config(window.config);
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.js';
ReactDOM.render(<App />, document.getElementById('app'));
export const gallery = [
{
imageAlt: 'Image 1',
imageSrc: '../../../../images/gallery/1.jpg',
},
{
imageAlt: 'Image 2',
imageSrc: '../../../../images/gallery/2.jpg',
},
{
imageAlt: 'Image 3',
imageSrc: '../../../../images/gallery/3.jpg',
},
{
imageAlt: 'Image 4',
imageSrc: '../../../../images/gallery/4.jpg',
},
{
imageAlt: 'Image 5',
imageSrc: '../../../../images/gallery/5.jpg',
},
{
imageAlt: 'Image 6',
imageSrc: '../../../../images/gallery/6.jpg',
},
{
imageAlt: 'Image 7',
imageSrc: '../../../../images/gallery/7.jpg',
},
{
imageAlt: 'Image 8',
imageSrc: '../../../../images/gallery/8.jpg',
},
{
imageAlt: 'Image 9',
imageSrc: '../../../../images/gallery/9.jpg',
},
];
<!DOCTYPE html>
<html lang="en">
<head>
<title>DevExtreme Demo</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=5.0" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/24.2.3/css/dx.light.css" />
<link rel="stylesheet" type="text/css" href="styles.css" />
<script src="https://unpkg.com/core-js@2.6.12/client/shim.min.js"></script>
<script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script>
<script type="text/javascript" src="config.js"></script>
<script type="text/javascript">
System.import("./index.tsx");
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app"></div>
</div>
</body>
</html>
.widget-container {
margin-right: 240px;
}
#gallery {
margin: auto;
max-width: 450px;
}
.options {
padding: 20px;
position: absolute;
bottom: 0;
right: 0;
width: 180px;
top: 0;
background-color: rgba(191, 191, 191, 0.15);
}
.caption {
font-size: 18px;
font-weight: 500;
}
.option {
margin-top: 10px;
}