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.
All trademarks or registered trademarks are property of their respective owners. AXE® Terms of Use
The overall accessibility level of your application depends on the SelectBox features used.
Backend API
<div class="dx-fieldset">
<div class="dx-field">
<div class="dx-field-label">Default mode</div>
<div class="dx-field-value">
<dx-select-box
[items]="simpleProducts"
[inputAttr]="{ 'aria-label': 'Simple Product' }"
></dx-select-box>
</div>
</div>
<div class="dx-field">
<div class="dx-field-label">With a custom placeholder</div>
<div class="dx-field-value">
<dx-select-box
placeholder="Choose Product"
[items]="simpleProducts"
[inputAttr]="{ 'aria-label': 'Product With Placeholder' }"
[showClearButton]="true"
></dx-select-box>
</div>
</div>
<div class="dx-field">
<div class="dx-field-label">Read only</div>
<div class="dx-field-value">
<dx-select-box
[items]="simpleProducts"
[inputAttr]="{ 'aria-label': 'ReadOnly Product' }"
[value]="simpleProducts[0]"
[readOnly]="true"
></dx-select-box>
</div>
</div>
<div class="dx-field">
<div class="dx-field-label">Disabled</div>
<div class="dx-field-value">
<dx-select-box
[items]="simpleProducts"
[inputAttr]="{ 'aria-label': 'Disabled Product' }"
[value]="simpleProducts[0]"
[disabled]="true"
></dx-select-box>
</div>
</div>
<div class="dx-field">
<div class="dx-field-label">Data source usage</div>
<div class="dx-field-value">
<dx-select-box
displayExpr="Name"
valueExpr="ID"
[dataSource]="data"
[inputAttr]="{ 'aria-label': 'Product ID' }"
[value]="products[0].ID"
></dx-select-box>
</div>
</div>
<div class="dx-field">
<div class="dx-field-label">Custom templates</div>
<div class="dx-field-value">
<dx-select-box
id="custom-templates"
displayExpr="Name"
valueExpr="ID"
fieldTemplate="field"
[dataSource]="products"
[inputAttr]="{ 'aria-label': 'Templated Product' }"
[value]="products[3].ID"
>
<div *dxTemplate="let data of 'field'">
<div class="custom-item">
<img alt="Product name" src="{{ data && data.ImageSrc }}" />
<dx-text-box
class="product-name"
[value]="data && data.Name"
[inputAttr]="{ 'aria-label': 'Name' }"
[readOnly]="true"
></dx-text-box>
</div>
</div>
<div *dxTemplate="let data of 'item'">
<div class="custom-item">
<img alt="Product name" src="{{ data.ImageSrc }}" />
<div class="product-name">
{{ data.Name }}
</div>
</div>
</div>
</dx-select-box>
</div>
</div>
</div>
<div class="dx-fieldset">
<div class="dx-fieldset-header">Event Handling</div>
<div class="dx-field">
<div class="dx-field-label">Product</div>
<div class="dx-field-value">
<dx-select-box
#selectBox
[items]="simpleProducts"
[inputAttr]="{ 'aria-label': 'Product' }"
[value]="simpleProducts[0]"
(onValueChanged)="onValueChanged($event)"
>
</dx-select-box>
</div>
</div>
<div class="current-value">
Selected product is <span>{{ selectBox.value }}</span>
</div>
</div>
import { NgModule, Component, enableProdMode } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import notify from 'devextreme/ui/notify';
import { DxSelectBoxModule, DxTextBoxModule, DxTemplateModule } from 'devextreme-angular';
import { ArrayStore } from 'devextreme-angular/common/data';
import { DxSelectBoxTypes } from 'devextreme-angular/ui/select-box';
import { Product, Service } from './app.service';
if (!/localhost/.test(document.location.host)) {
enableProdMode();
}
let modulePrefix = '';
// @ts-ignore
if (window && window.config?.packageConfigPaths) {
modulePrefix = '/app';
}
@Component({
selector: 'demo-app',
templateUrl: `app/app.component.html`,
styleUrls: [`app/app.component.css`],
providers: [Service],
})
export class AppComponent {
simpleProducts: string[];
products: Product[];
data: ArrayStore;
constructor(service: Service) {
this.products = service.getProducts();
this.simpleProducts = service.getSimpleProducts();
this.data = new ArrayStore({
data: this.products,
key: 'ID',
});
}
onValueChanged({ value }: DxSelectBoxTypes.ValueChangedEvent) {
notify(`The value is changed to: "${value}"`);
}
}
@NgModule({
imports: [
BrowserModule,
DxSelectBoxModule,
DxTextBoxModule,
DxTemplateModule,
],
declarations: [AppComponent],
bootstrap: [AppComponent],
})
export class AppModule { }
platformBrowserDynamic().bootstrapModule(AppModule);
::ng-deep .dx-dropdownlist-popup-wrapper .dx-list:not(.dx-list-select-decorator-enabled) .dx-list-item-content {
padding-left: 7px;
padding-right: 7px;
}
::ng-deep .custom-item {
position: relative;
min-height: 30px;
}
::ng-deep .dx-dropdowneditor-input-wrapper .custom-item > img {
padding-left: 8px;
}
::ng-deep .custom-item .product-name {
display: inline-block;
padding-left: 50px;
text-indent: 0;
line-height: 30px;
font-size: 15px;
width: 100%;
}
::ng-deep .custom-item > img {
left: 1px;
position: absolute;
top: 50%;
margin-top: -15px;
}
::ng-deep .dx-theme-material #custom-templates .dx-texteditor-buttons-container {
display: none;
}
::ng-deep .current-value {
padding: 10px 0;
}
::ng-deep .current-value > span {
font-weight: bold;
}
::ng-deep .dx-theme-material .dx-selectbox-container .product-name {
padding-left: 58px;
}
import { Injectable } from '@angular/core';
export class Product {
ID: number;
Name: string;
Price: number;
Current_Inventory: number;
Backorder: number;
Manufacturing: number;
Category: string;
ImageSrc: string;
}
const simpleProducts: string[] = [
'HD Video Player',
'SuperHD Video Player',
'SuperPlasma 50',
'SuperLED 50',
'SuperLED 42',
'SuperLCD 55',
'SuperLCD 42',
'SuperPlasma 65',
'SuperLCD 70',
'Projector Plus',
'Projector PlusHT',
'ExcelRemote IR',
'ExcelRemote BT',
'ExcelRemote IP',
];
const products: Product[] = [{
ID: 1,
Name: 'HD Video Player',
Price: 330,
Current_Inventory: 225,
Backorder: 0,
Manufacturing: 10,
Category: 'Video Players',
ImageSrc: '../../../../images/products/1-small.png',
}, {
ID: 2,
Name: 'SuperHD Player',
Price: 400,
Current_Inventory: 150,
Backorder: 0,
Manufacturing: 25,
Category: 'Video Players',
ImageSrc: '../../../../images/products/2-small.png',
}, {
ID: 3,
Name: 'SuperPlasma 50',
Price: 2400,
Current_Inventory: 0,
Backorder: 0,
Manufacturing: 0,
Category: 'Televisions',
ImageSrc: '../../../../images/products/3-small.png',
}, {
ID: 4,
Name: 'SuperLED 50',
Price: 1600,
Current_Inventory: 77,
Backorder: 0,
Manufacturing: 55,
Category: 'Televisions',
ImageSrc: '../../../../images/products/4-small.png',
}, {
ID: 5,
Name: 'SuperLED 42',
Price: 1450,
Current_Inventory: 445,
Backorder: 0,
Manufacturing: 0,
Category: 'Televisions',
ImageSrc: '../../../../images/products/5-small.png',
}, {
ID: 6,
Name: 'SuperLCD 55',
Price: 1350,
Current_Inventory: 345,
Backorder: 0,
Manufacturing: 5,
Category: 'Televisions',
ImageSrc: '../../../../images/products/6-small.png',
}, {
ID: 7,
Name: 'SuperLCD 42',
Price: 1200,
Current_Inventory: 210,
Backorder: 0,
Manufacturing: 20,
Category: 'Televisions',
ImageSrc: '../../../../images/products/7-small.png',
}, {
ID: 8,
Name: 'SuperPlasma 65',
Price: 3500,
Current_Inventory: 0,
Backorder: 0,
Manufacturing: 0,
Category: 'Televisions',
ImageSrc: '../../../../images/products/8-small.png',
}, {
ID: 9,
Name: 'SuperLCD 70',
Price: 4000,
Current_Inventory: 95,
Backorder: 0,
Manufacturing: 5,
Category: 'Televisions',
ImageSrc: '../../../../images/products/9-small.png',
}, {
ID: 10,
Name: 'DesktopLED 21',
Price: 175,
Current_Inventory: 0,
Backorder: 425,
Manufacturing: 75,
Category: 'Monitors',
ImageSrc: '../../../../images/products/10-small.png',
}, {
ID: 11,
Name: 'DesktopLED 19',
Price: 165,
Current_Inventory: 425,
Backorder: 0,
Manufacturing: 110,
Category: 'Monitors',
ImageSrc: '../../../../images/products/11-small.png',
}, {
ID: 12,
Name: 'DesktopLCD 21',
Price: 170,
Current_Inventory: 210,
Backorder: 0,
Manufacturing: 60,
Category: 'Monitors',
ImageSrc: '../../../../images/products/12-small.png',
}, {
ID: 13,
Name: 'DesktopLCD 19',
Price: 160,
Current_Inventory: 150,
Backorder: 0,
Manufacturing: 210,
Category: 'Monitors',
ImageSrc: '../../../../images/products/13-small.png',
}, {
ID: 14,
Name: 'Projector Plus',
Price: 550,
Current_Inventory: 0,
Backorder: 55,
Manufacturing: 10,
Category: 'Projectors',
ImageSrc: '../../../../images/products/14-small.png',
}, {
ID: 15,
Name: 'Projector PlusHD',
Price: 750,
Current_Inventory: 110,
Backorder: 0,
Manufacturing: 90,
Category: 'Projectors',
ImageSrc: '../../../../images/products/15-small.png',
}, {
ID: 16,
Name: 'Projector PlusHT',
Price: 1050,
Current_Inventory: 0,
Backorder: 75,
Manufacturing: 57,
Category: 'Projectors',
ImageSrc: '../../../../images/products/16-small.png',
}, {
ID: 17,
Name: 'ExcelRemote IR',
Price: 150,
Current_Inventory: 650,
Backorder: 0,
Manufacturing: 190,
Category: 'Automation',
ImageSrc: '../../../../images/products/17-small.png',
}, {
ID: 18,
Name: 'ExcelRemote BT',
Price: 180,
Current_Inventory: 310,
Backorder: 0,
Manufacturing: 0,
Category: 'Automation',
ImageSrc: '../../../../images/products/18-small.png',
}, {
ID: 19,
Name: 'ExcelRemote IP',
Price: 200,
Current_Inventory: 0,
Backorder: 325,
Manufacturing: 225,
Category: 'Automation',
ImageSrc: '../../../../images/products/19-small.png',
}];
@Injectable()
export class Service {
getSimpleProducts(): string[] {
return simpleProducts;
}
getProducts(): Product[] {
return products;
}
}
// 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',
'card-view',
'chart',
'chat',
'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',
'pagination',
'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',
'stepper',
'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/animations': {
'esModule': true,
},
'@angular/forms': {
'esModule': true,
},
'openai': {
'esModule': true,
},
},
paths: {
'npm:': 'https://cdn.jsdelivr.net/npm/',
'bundles:': '../../../../bundles/',
'externals:': '../../../../bundles/externals/',
},
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',
/* @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@link:../../packages/devextreme/artifacts/npm/devextreme/cjs',
'devextreme-quill': 'npm:devextreme-quill@1.7.6/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.2.24',
'devexpress-gantt': 'npm:devexpress-gantt@4.1.64',
/* devextreme-angular umd maps */
'devextreme-angular': 'bundles:devextreme-angular/devextreme-angular.umd.js',
'devextreme-angular/common/ai-integration': 'bundles:devextreme-angular/devextreme-angular-common-ai-integration.umd.js',
'devextreme-angular/core': 'bundles:devextreme-angular/devextreme-angular-core.umd.js',
'devextreme-angular/common/charts': 'bundles:devextreme-angular/devextreme-angular-common-charts.umd.js',
'devextreme-angular/common/core/animation': 'bundles:devextreme-angular/devextreme-angular-common-core-animation.umd.js',
'devextreme-angular/common/core/environment': 'bundles:devextreme-angular/devextreme-angular-common-core-environment.umd.js',
'devextreme-angular/common/core/events': 'bundles:devextreme-angular/devextreme-angular-common-core-events.umd.js',
'devextreme-angular/common/core/localization': 'bundles:devextreme-angular/devextreme-angular-common-core-localization.umd.js',
'devextreme-angular/common/core': 'bundles:devextreme-angular/devextreme-angular-common-core.umd.js',
'devextreme-angular/common/data/custom-store': 'bundles:devextreme-angular/devextreme-angular-common-data-custom-store.umd.js',
'devextreme-angular/common/data': 'bundles:devextreme-angular/devextreme-angular-common-data.umd.js',
'devextreme-angular/common/export/excel': 'bundles:devextreme-angular/devextreme-angular-common-export-excel.umd.js',
'devextreme-angular/common/export/pdf': 'bundles:devextreme-angular/devextreme-angular-common-export-pdf.umd.js',
'devextreme-angular/common/export': 'bundles:devextreme-angular/devextreme-angular-common-export.umd.js',
'devextreme-angular/common/grids': 'bundles:devextreme-angular/devextreme-angular-common-grids.umd.js',
'devextreme-angular/common': 'bundles:devextreme-angular/devextreme-angular-common.umd.js',
'devextreme-angular/http': 'bundles:devextreme-angular/devextreme-angular-http.umd.js',
'devextreme-angular/core/tokens': 'bundles:devextreme-angular/devextreme-angular-core-tokens.umd.js',
...componentNames.reduce((acc, name) => {
acc[`devextreme-angular/ui/${name}`] = `bundles:devextreme-angular/devextreme-angular-ui-${name}.umd.js`;
acc[`devextreme-angular/ui/${name}/nested`] = `bundles:devextreme-angular/devextreme-angular-ui-${name}-nested.umd.js`;
return acc;
}, {}),
'tslib': 'npm:tslib/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@3.4.4/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign',
'inferno': 'npm:inferno@8.2.3/dist/inferno.min.js',
'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js',
'inferno-create-element': 'npm:inferno-create-element@8.2.3/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',
'@preact/signals-core': 'npm:@preact/signals-core@1.8.0/dist/signals-core.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/common/core/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:rxjs@7.5.3/package.json',
'npm:rxjs@7.5.3/operators/package.json',
'npm:devexpress-diagram@2.2.24/package.json',
'npm:devexpress-gantt@4.1.64/package.json',
],
};
System.config(window.config);
// System.import('@angular/compiler').catch(console.error.bind(console));
// eslint-disable-next-line
const useTgzInCSB = ['openai'];
let packagesInfo = {
"@angular/core": {
"version": "17.3.12"
},
"core-js": {
"version": "2.6.12"
},
"typescript": {
"version": "5.4.5"
},
"zone.js": {
"version": "0.14.10"
}
};
<!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/25.1.6/css/dx.light.css" />
<script src="https://cdn.jsdelivr.net/npm/core-js@2.6.12/client/shim.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/zone.js@0.14.10/bundles/zone.umd.js"></script>
<script src="https://cdn.jsdelivr.net/npm/reflect-metadata@0.1.13/Reflect.js"></script>
<script src="https://cdn.jsdelivr.net/npm/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>
This demo illustrates the following SelectBox properties:
- items
Specifies an array of items displayed in the SelectBox. - placeholder
Specifies the text that is displayed when no items are selected. - readOnly
Prevents users from changing the editor's value via the UI. - disabled
Specifies whether the SelectBox responds to user interaction. - dataSource
Binds the SelectBox to data. Unlike the items property, dataSource accepts the DataSource object that allows users to sort, filter, group, and shape data. - fieldTemplate and itemTemplate
Allow you to customize the text field and drop-down list items. - onValueChanged event handler
Use this function to perform an action when a user chooses a new value. In this demo, this function is used to display the selected value.
To get started with the DevExtreme SelectBox component, refer to the following tutorial for step-by-step instructions: Getting Started with SelectBox.