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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The overall accessibility level of your application depends on the Tabs features used.
Backend API
<div class="tabs-demo">
<div class="widget-container">
<div
[class.widget-wrapper]="widgetWrapperClasses['widget-wrapper']"
[class.widget-wrapper-horizontal]="
widgetWrapperClasses['widget-wrapper-horizontal']
"
[class.widget-wrapper-vertical]="
widgetWrapperClasses['widget-wrapper-vertical']
"
[class.strict-width]="widgetWrapperClasses['strict-width']"
>
<dx-tabs
#withText
[width]="width"
[selectedIndex]="0"
[rtlEnabled]="rtlEnabled"
[scrollByContent]="scrollByContent"
[showNavButtons]="showNavButtons"
[dataSource]="tabsWithText"
[orientation]="orientation"
[stylingMode]="stylingMode"
[iconPosition]="iconPosition"
></dx-tabs>
<dx-tabs
#withIconAndText
[width]="width"
[selectedIndex]="0"
[rtlEnabled]="rtlEnabled"
[scrollByContent]="scrollByContent"
[showNavButtons]="showNavButtons"
[dataSource]="tabsWithIconAndText"
[orientation]="orientation"
[stylingMode]="stylingMode"
[iconPosition]="iconPosition"
></dx-tabs>
<dx-tabs
#withIcon
[width]="width"
[selectedIndex]="0"
[rtlEnabled]="rtlEnabled"
[scrollByContent]="scrollByContent"
[showNavButtons]="showNavButtons"
[dataSource]="tabsWithIcon"
[orientation]="orientation"
[stylingMode]="stylingMode"
[iconPosition]="iconPosition"
></dx-tabs>
</div>
</div>
<div class="options">
<div class="caption">Options</div>
<div class="option">
<span>Orientation</span>
<dx-select-box
[inputAttr]="{ 'aria-label': 'Orientation' }"
[items]="orientations"
[(value)]="orientation"
(onValueChanged)="onOrientationChanged($event)"
></dx-select-box>
</div>
<div class="option">
<span>Styling mode</span>
<dx-select-box
[inputAttr]="{ 'aria-label': 'Styling Mode' }"
[items]="stylingModes"
[(value)]="stylingMode"
></dx-select-box>
</div>
<div class="option">
<span>Icon position</span>
<dx-select-box
[inputAttr]="{ 'aria-label': 'Icon Position' }"
[items]="iconPositions"
[(value)]="iconPosition"
></dx-select-box>
</div>
<div class="option">
<dx-check-box
id="show-navigation-buttons"
text="Show navigation buttons"
[(value)]="showNavButtons"
(onValueChanged)="toggleStrictWidthClass()"
></dx-check-box>
</div>
<div class="option">
<dx-check-box
text="Scroll content"
[(value)]="scrollByContent"
(onValueChanged)="toggleStrictWidthClass()"
></dx-check-box>
</div>
<div class="option">
<dx-check-box
text="Full width"
[value]="false"
(onValueChanged)="onFullWidthChanged($event)"
></dx-check-box>
</div>
<div class="option">
<dx-check-box
text="Right-to-left mode"
[(value)]="rtlEnabled"
></dx-check-box>
</div>
</div>
</div>
import { bootstrapApplication } from '@angular/platform-browser';
import { Component, enableProdMode, ViewChild, provideZoneChangeDetection } from '@angular/core';
import { DxSelectBoxModule, DxSelectBoxTypes } from 'devextreme-angular/ui/select-box';
import { DxCheckBoxModule, DxCheckBoxTypes } from 'devextreme-angular/ui/check-box';
import { DxTabsModule, DxTabsComponent, DxTabsTypes } from 'devextreme-angular/ui/tabs';
import { Tab, Service } from './app.service';
if (!/localhost/.test(document.location.host)) {
enableProdMode();
}
@Component({
selector: 'demo-app',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css'],
providers: [Service],
imports: [
DxTabsModule,
DxCheckBoxModule,
DxSelectBoxModule,
],
})
export class AppComponent {
@ViewChild('withText') withText: DxTabsComponent;
@ViewChild('withIconAndText') withIconAndText: DxTabsComponent;
@ViewChild('withIcon') withIcon: DxTabsComponent;
tabsWithText: Tab[];
tabsWithIconAndText: Tab[];
tabsWithIcon: Tab[];
showNavButtons = false;
scrollByContent = false;
rtlEnabled = false;
orientations: DxTabsTypes.Orientation[] = ['horizontal', 'vertical'];
stylingModes: DxTabsTypes.TabsStyle[] = ['primary', 'secondary'];
iconPositions: DxTabsTypes.TabsIconPosition[] = ['top', 'start', 'end', 'bottom'];
width = 'auto';
orientation = this.orientations[0];
stylingMode = this.stylingModes[1];
iconPosition = this.iconPositions[0];
widgetWrapperClasses = {
'widget-wrapper': true,
'widget-wrapper-horizontal': true,
'widget-wrapper-vertical': false,
'strict-width': false,
};
constructor(service: Service) {
this.tabsWithText = service.getTabsWithText();
this.tabsWithIconAndText = service.getTabsWithIconAndText();
this.tabsWithIcon = service.getTabsWithIcon();
}
onOrientationChanged(e: DxSelectBoxTypes.ValueChangedEvent) {
if (e.value === 'vertical') {
this.widgetWrapperClasses['widget-wrapper-vertical'] = true;
this.widgetWrapperClasses['widget-wrapper-horizontal'] = false;
} else {
this.widgetWrapperClasses['widget-wrapper-horizontal'] = true;
this.widgetWrapperClasses['widget-wrapper-vertical'] = false;
}
}
toggleStrictWidthClass() {
this.widgetWrapperClasses['strict-width'] = this.scrollByContent || this.showNavButtons;
}
onFullWidthChanged(e: DxCheckBoxTypes.ValueChangedEvent) {
this.width = e.value ? '100%' : 'auto';
}
}
bootstrapApplication(AppComponent, {
providers: [
provideZoneChangeDetection({ eventCoalescing: true, runCoalescing: true }),
],
});
::ng-deep .tabs-demo {
display: flex;
}
::ng-deep .strict-width {
max-width: 340px;
}
::ng-deep .dx-theme-generic .strict-width {
max-width: 250px;
}
::ng-deep .widget-container {
display: flex;
align-items: center;
justify-content: center;
flex-grow: 1;
width: 100%;
min-width: 200px;
padding: 16px 32px;
overflow: clip;
}
::ng-deep .widget-wrapper {
display: inline-flex;
flex-direction: column;
align-items: center;
justify-content: center;
gap: 80px;
width: 100%;
}
::ng-deep .widget-wrapper-vertical {
width: 100%;
flex-direction: row;
align-items: center;
}
.options {
display: flex;
flex-direction: column;
flex-shrink: 0;
padding: 20px;
background-color: rgba(191, 191, 191, 0.15);
}
.caption {
font-weight: 500;
font-size: 18px;
}
::ng-deep #show-navigation-buttons {
margin-top: 22px;
}
.option {
margin-top: 20px;
}
::ng-deep .dx-tabs {
max-width: 100%;
}
::ng-deep .dx-tabs-vertical {
height: 216px;
}
::ng-deep .dx-viewport:not(.dx-theme-generic) .dx-tabs-horizontal {
border-block-end: 1px solid rgb(225, 225, 225, 0.4);
}
::ng-deep .dx-viewport:not(.dx-theme-generic) .dx-tabs-vertical {
height: 232px;
border-inline-end: 1px solid rgb(225, 225, 225, 0.4);
}
import { Injectable } from '@angular/core';
export class Tab {
id: number;
text?: string;
icon?: string;
}
const tabsWithText: Tab[] = [
{
id: 0,
text: 'User',
},
{
id: 1,
text: 'Analytics',
},
{
id: 2,
text: 'Clients',
},
{
id: 3,
text: 'Orders',
},
{
id: 4,
text: 'Favorites',
},
{
id: 5,
text: 'Search',
},
];
const tabsWithIcon: Tab[] = [
{
id: 0,
icon: 'user',
},
{
id: 1,
icon: 'chart',
},
{
id: 2,
icon: 'accountbox',
},
{
id: 3,
icon: 'ordersbox',
},
{
id: 4,
icon: 'bookmark',
},
{
id: 5,
icon: 'search',
},
];
const tabsWithIconAndText: Tab[] = [
{
id: 0,
text: 'User',
icon: 'user',
},
{
id: 1,
text: 'Analytics',
icon: 'chart',
},
{
id: 2,
text: 'Clients',
icon: 'accountbox',
},
{
id: 3,
text: 'Orders',
icon: 'ordersbox',
},
{
id: 4,
text: 'Favorites',
icon: 'bookmark',
},
{
id: 5,
text: 'Search',
icon: 'search',
},
];
@Injectable()
export class Service {
getTabsWithText(): Tab[] {
return tabsWithText;
}
getTabsWithIconAndText(): Tab[] {
return tabsWithIconAndText;
}
getTabsWithIcon(): Tab[] {
return tabsWithIcon;
}
}
<!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/26.1.5/css/dx.light.css" />
</head>
<body class="dx-viewport">
<div class="demo-container">
<demo-app>Loading...</demo-app>
</div>
<script src="https://cdn.jsdelivr.net/npm/zone.js@0.16.2/bundles/zone.umd.js"></script>
<script src="./bundle.js" type="module"></script>
</body>
</html>
Customize Tab Contents and Appearance
You can initialize a tab’s contents (text, icons and badges) with values from underlying data objects. This example demonstrates this technique.
Use the drop-down editors on the right to change the component's orientation, styling mode, and icon position.
You can also specify an item template (itemTemplate) to customize tabs.
Configure Overflow Behavior
The Tabs component stretches to fit its container if you do not specify the component's width. When the total tab width exceeds the component’s width, navigation buttons appear. A user can click these buttons to scroll through the tabs. Use the showNavButtons and scrollByContent properties to control this behavior.