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
<div id="form-demo">
<div class="widget-container">
<div *ngIf="labelMode === 'outside'">Select company:</div>
<dx-select-box
#company
displayExpr="Name"
[inputAttr]="{ 'aria-label': 'Company' }"
[(dataSource)]="companies"
label="Select company"
[labelMode]="getCompanySelectorLabelMode()"
[value]="companies[0]"
></dx-select-box>
<dx-form
id="form"
[(formData)]="company.value"
[readOnly]="readOnly"
[labelMode]="labelMode"
[showColonAfterLabel]="showColon"
[labelLocation]="labelLocation"
[minColWidth]="minColWidth"
[colCount]="colCount"
[width]="width"
></dx-form>
</div>
<div class="options">
<div class="caption">Options</div>
<div class="option">
<span>Label mode:</span>
<dx-select-box
[items]="['outside', 'static', 'floating', 'hidden']"
[inputAttr]="{ 'aria-label': 'Label Mode' }"
[(value)]="labelMode"
></dx-select-box>
</div>
<div class="option">
<span>Label location:</span>
<dx-select-box
[items]="['left', 'top']"
[inputAttr]="{ 'aria-label': 'Label Location' }"
[(value)]="labelLocation"
></dx-select-box>
</div>
<div class="option">
<span>Columns count:</span>
<dx-select-box
[items]="['auto', 1, 2, 3]"
[inputAttr]="{ 'aria-label': 'Column Count' }"
[(value)]="colCount"
></dx-select-box>
</div>
<div class="option">
<span>Min column width:</span>
<dx-select-box
[items]="[150, 200, 300]"
[inputAttr]="{ 'aria-label': 'Min Column Width' }"
[(value)]="minColWidth"
></dx-select-box>
</div>
<div class="option">
<span>Form width:</span>
<dx-number-box
[max]="550"
[(value)]="width"
[inputAttr]="{ 'aria-label': 'Form Width' }"
></dx-number-box>
</div>
<div class="option">
<dx-check-box text="readOnly" [(value)]="readOnly"></dx-check-box>
</div>
<div class="option">
<dx-check-box
text="showColonAfterLabel"
[(value)]="showColon"
></dx-check-box>
</div>
</div>
</div>
import { NgModule, Component, enableProdMode } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { DxCheckBoxModule, DxNumberBoxModule, DxSelectBoxModule } from 'devextreme-angular';
import { DxFormModule, DxFormTypes } from 'devextreme-angular/ui/form';
import { Company, Service } from './app.service';
if (!/localhost/.test(document.location.host)) {
enableProdMode();
}
@Component({
selector: 'demo-app',
providers: [Service],
templateUrl: `app/app.component.html`,
styleUrls: [`app/app.component.css`],
})
export class AppComponent {
companies: Company[];
width: number;
labelMode: DxFormTypes.FormLabelMode = 'floating';
labelLocation: DxFormTypes.LabelLocation = 'left';
readOnly = false;
showColon = true;
minColWidth = 300;
colCount = 2;
constructor(service: Service) {
this.companies = service.getCompanies();
}
getCompanySelectorLabelMode() {
return this.labelMode === 'outside'
? 'hidden'
: this.labelMode;
}
}
@NgModule({
imports: [
BrowserModule,
DxCheckBoxModule,
DxSelectBoxModule,
DxNumberBoxModule,
DxFormModule,
],
declarations: [AppComponent],
bootstrap: [AppComponent],
})
export class AppModule { }
platformBrowserDynamic().bootstrapModule(AppModule);
::ng-deep .widget-container {
margin-right: 320px;
padding: 20px;
max-width: 550px;
min-width: 300px;
}
::ng-deep #form {
margin-top: 25px;
}
.options {
padding: 20px;
position: absolute;
bottom: 0;
right: 0;
width: 260px;
top: 0;
background-color: rgba(191, 191, 191, 0.15);
}
.caption {
font-size: 18px;
font-weight: 500;
}
::ng-deep.option {
margin-top: 10px;
}
import { Injectable } from '@angular/core';
export class Company {
ID: number;
Name: string;
Address: string;
City: string;
State: string;
ZipCode: number;
Phone: string;
Fax: string;
Website: string;
Active: boolean;
}
const companies: Company[] = [{
ID: 1,
Name: 'Super Mart of the West',
Address: '702 SW 8th Street',
City: 'Bentonville',
State: 'Arkansas',
ZipCode: 72716,
Phone: '(800) 555-2797',
Fax: '(800) 555-2171',
Website: '',
Active: true,
}, {
ID: 2,
Name: 'Electronics Depot',
Address: '2455 Paces Ferry Road NW',
City: 'Atlanta',
State: 'Georgia',
ZipCode: 30339,
Phone: '(800) 595-3232',
Fax: '(800) 595-3231',
Website: '',
Active: true,
}, {
ID: 3,
Name: 'K&S Music',
Address: '1000 Nicllet Mall',
City: 'Minneapolis',
State: 'Minnesota',
ZipCode: 55403,
Phone: '(612) 304-6073',
Fax: '(612) 304-6074',
Website: '',
Active: true,
}, {
ID: 4,
Name: "Tom's Club",
Address: '999 Lake Drive',
City: 'Issaquah',
State: 'Washington',
ZipCode: 98027,
Phone: '(800) 955-2292',
Fax: '(800) 955-2293',
Website: '',
Active: true,
}];
@Injectable()
export class Service {
getCompanies() : Company[] {
return companies;
}
}
// In real applications, you should not transpile code in the browser.
// You can see how to create your own application with Angular and DevExtreme here:
// https://js.devexpress.com/Documentation/Guide/Angular_Components/Getting_Started/Create_a_DevExtreme_Application/
const componentNames = [
'accordion',
'action-sheet',
'autocomplete',
'bar-gauge',
'box',
'bullet',
'button-group',
'button',
'calendar',
'chart',
'check-box',
'circular-gauge',
'color-box',
'context-menu',
'data-grid',
'date-box',
'date-range-box',
'defer-rendering',
'diagram',
'draggable',
'drawer',
'drop-down-box',
'drop-down-button',
'file-manager',
'file-uploader',
'filter-builder',
'form',
'funnel',
'gallery',
'gantt',
'html-editor',
'linear-gauge',
'list',
'load-indicator',
'load-panel',
'lookup',
'map',
'menu',
'multi-view',
'nested',
'number-box',
'pie-chart',
'pivot-grid-field-chooser',
'pivot-grid',
'polar-chart',
'popover',
'popup',
'progress-bar',
'radio-group',
'range-selector',
'range-slider',
'recurrence-editor',
'resizable',
'responsive-box',
'sankey',
'scheduler',
'scroll-view',
'select-box',
'slider',
'sortable',
'sparkline',
'speed-dial-action',
'splitter',
'switch',
'tab-panel',
'tabs',
'tag-box',
'text-area',
'text-box',
'tile-view',
'toast',
'toolbar',
'tooltip',
'tree-list',
'tree-map',
'tree-view',
'validation-group',
'validation-summary',
'validator',
'vector-map',
];
window.exports = window.exports || {};
window.config = {
transpiler: 'ts',
typescriptOptions: {
module: 'system',
emitDecoratorMetadata: true,
experimentalDecorators: true,
},
meta: {
'typescript': {
'exports': 'ts',
},
'devextreme/time_zone_utils.js': {
'esModule': true,
},
'devextreme/localization.js': {
'esModule': true,
},
'devextreme/viz/palette.js': {
'esModule': true,
},
'@angular/platform-browser-dynamic': {
'esModule': true,
},
'@angular/platform-browser': {
'esModule': true,
},
'@angular/core': {
'esModule': true,
},
'@angular/common': {
'esModule': true,
},
'@angular/common/http': {
'esModule': true,
},
'@angular/compiler': {
'esModule': true,
},
'@angular/animations': {
'esModule': true,
},
'@angular/forms': {
'esModule': true,
},
},
paths: {
'npm:': 'https://unpkg.com/',
'bundles:': '../../../../bundles/',
},
map: {
'ts': 'npm:plugin-typescript@4.2.4/lib/plugin.js',
'typescript': 'npm:typescript@4.2.4/lib/typescript.js',
/* @angular */
'@angular/compiler': 'bundles:@angular/compiler.umd.js',
'@angular/platform-browser-dynamic': 'bundles:@angular/platform-browser-dynamic.umd.js',
'@angular/core': 'bundles:@angular/core.umd.js',
'@angular/core/primitives/signals': 'bundles:@angular/core.primitives.signals.umd.js',
'@angular/common': 'bundles:@angular/common.umd.js',
'@angular/common/http': 'bundles:@angular/common-http.umd.js',
'@angular/platform-browser': 'bundles:@angular/platform-browser.umd.js',
'@angular/platform-browser/animations': 'bundles:@angular/platform-browser.umd.js',
'@angular/forms': 'bundles:@angular/forms.umd.js',
/* devextreme */
'devextreme': 'npm:devextreme@24.1.7/cjs',
'@devextreme/runtime': 'npm:@devextreme/runtime@3.0.13',
'devextreme/bundles/dx.all': 'npm:devextreme@24.1.7/bundles/dx.all.js',
'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.2.13',
'devexpress-gantt': 'npm:devexpress-gantt@4.1.56',
/* devextreme-angular umd maps */
'devextreme-angular': 'bundles:devextreme-angular/devextreme-angular.umd.js',
'devextreme-angular/core': 'bundles:devextreme-angular/devextreme-angular-core.umd.js',
'devextreme-angular/http': 'bundles:devextreme-angular/devextreme-angular-http.umd.js',
...componentNames.reduce((acc, name) => {
acc[`devextreme-angular/ui/${name}`] = `bundles:devextreme-angular/devextreme-angular-ui-${name}.umd.js`;
return acc;
}, {}),
'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js',
'tslib': 'npm:tslib@2.6.1/tslib.js',
'rxjs': 'npm:rxjs@7.5.3/dist/bundles/rxjs.umd.js',
'rxjs/operators': 'npm:rxjs@7.5.3/dist/cjs/operators/index.js',
'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.28.1/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'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@7.4.11/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',
// Prettier
'prettier/standalone': 'npm:prettier@2.8.8/standalone.js',
'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js',
},
packages: {
'app': {
main: './app.component.ts',
defaultExtension: 'ts',
},
'devextreme': {
defaultExtension: 'js',
},
'devextreme/events/utils': {
main: 'index',
},
'devextreme/events': {
main: 'index',
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js',
},
'rxjs': {
defaultExtension: 'js',
},
'rxjs/operators': {
defaultExtension: 'js',
},
},
packageConfigPaths: [
'npm:@devextreme/*/package.json',
'npm:@devextreme/runtime@3.0.13/inferno/package.json',
'npm:rxjs@7.5.3/package.json',
'npm:rxjs@7.5.3/operators/package.json',
'npm:devexpress-diagram@2.2.13/package.json',
'npm:devexpress-gantt@4.1.56/package.json',
],
};
System.config(window.config);
// System.import('@angular/compiler').catch(console.error.bind(console));
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" 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/24.1.7/css/dx.light.css" />
<script src="https://unpkg.com/core-js@2.6.12/client/shim.min.js"></script>
<script src="https://unpkg.com/zone.js@0.13.3/bundles/zone.umd.min.js"></script>
<script src="https://unpkg.com/reflect-metadata@0.1.13/Reflect.js"></script>
<script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script>
<script src="config.js"></script>
<script>
System.import("app").catch(console.error.bind(console));
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<demo-app>Loading...</demo-app>
</div>
</body>
</html>
You can use the editors on the right to modify the following properties:
-
labelMode: "outside" | "static" | "floating" | "hidden"
Specifies label display mode. -
labelLocation: "top" | "left" | "right"
Specifies whether to place outer labels above, to the left, or to the right of corresponding editors. The latter location is not demonstrated in this example. -
colCount
Specifies the number of columns in the layout. To build an adaptive layout where the column count depends on the container width, set this property's value to "auto". -
minColWidth
Specifies the minimum column width. Use this property when the colCount property's value is "auto". -
width
Specifies the Form component's width. -
readOnly
Makes the Form editors read-only. -
showColonAfterLabel
Specifies whether the Form displays a colon after a label.
To get started with the DevExtreme Form component, refer to the following tutorial for step-by-step instructions: Getting Started with Form.