Accessibility in React Tab component

24 Feb 202319 minutes to read

ARIA attributes

Tab component is designed by considering WAI-ARIA standard. Tab is supported with ARIA Accessibility which is accessible by on-screen readers, and other assistive technology devices.
The following list of attributes are added in the Tab.

Roles and Attributes	Functionalities
`tablist`	Attribute is set to the Tab header element that describes actual role of the element.
`tab`	Attribute is set to the Tab items element to indicates an interactive element inside a `tablist` that, when activated, displays its associated `tabpanel`.
`tabpanel`	Attribute is set to the Tab content that describes the role for viewing the active content.
aria-orientation	Attribute is set to the Tab header element indicates the Tab header orientation. Default value of this attribute is horizontal.
aria-selected	Attribute set to the Tab items to indicates the selection state for Tab items. Active Tab is set to true for this attribute.
aria-labelledby	Attribute is set to the Tab content element to indicates the associated Tab header for the content.
aria-controls	Attribute is set to the Tab items element to indicates the associated `tabpanel` for the header.
aria-haspopup	Attribute is set to the Popup element to indicates the popup mode in the Tab. The default value of this attribute is false. If popup mode is enabled, the attribute value is set to true.
aria-disabled	Attribute set to the Tab items to It indicates the disabled state of the Tab.

Keyboard interaction

By default, keyboard navigation is enabled. This component implements keyboard navigation support by following the WAI-ARIA practices. Once focused on the active Tab element, you can use the following key combination for interacting with the Tab.

Key	Description
`Left`	Moves focus to the previous Tab. If focus is on the first Tab, the focus will not move to any Tab.
`Right`	Moves focus to the next Tab. If focus is on the last Tab element, the focus will not move to any Tab.
`Enter` or `Space`	Selects the Tab if it is not selected. Opens the popup dropdown icon if it is focussed. Select the Tab item as active when popup item is focussed.
`Esc(Escape)`	Closes the popup if popup is in opened state.
`Down` or `Up`	When the popup is open and focused, it will move to previous/next Tab items of the popup in the vertical direction.
`Home`	Moves focus to the first Tab.
`End`	Moves focus to the last Tab.
`Shift + F10`	If popup mode is enabled, it opens the popup when the Tab is focused.
`Delete`	Deletes the Tab, if close button is enabled in Tab header.

index.jsx
index.tsx
index.html
import { TabComponent, TabItemDirective, TabItemsDirective } from '@syncfusion/ej2-react-navigations';
import * as React from 'react';
import * as ReactDOM from 'react-dom';
function ReactApp() {
    let headerText = [{ text: "HTML" }, { text: "C Sharp(C#)" }, { text: "Java" }, { text: "VB.Net" }, { text: "Xamarin" }, { text: "ASP.NET" }, { text: "ASP.NET MVC" }, { text: "JavaScript" }];
    function content0() {
        return <div>
      HyperText Markup Language, commonly referred to as HTML, is the standard markup
      language used to create web pages. Along with CSS, and JavaScript, HTML is a cornerstone
      technology, used by most websites to create visually engaging web pages, user interfaces
      for web applications, and user interfaces for many mobile applications.[1] Web browsers
      can read HTML files and render them into visible or audible web pages. HTML describes
      the structure of a website semantically along with cues for presentation, making it a
      markup language, rather than a programming language.
    </div>;
    }
    function content1() {
        return <div>
      'C# is intended to be a simple, modern, general-purpose, object-oriented
      programming language. Its development team is led by Anders Hejlsberg. The most recent
      version is C# 5.0, which was released on August 15, 2012.
    </div>;
    }
    function content2() {
        return <div>
      Java is a set of computer software and specifications developed by Sun Microsystems,
      later acquired by Oracle Corporation, that provides a system for developing application
      software and deploying it in a cross-mobile phones to platform computing environment. Java
      is used in a wide variety of computing platforms from embedded devices and enterprise servers
      and supercomputers. While less common, Java applets run in secure, sandboxed environments to
      provide many features of native applications and can be embedded in HTML pages.
    </div>;
    }
    function content3() {
        return <div>
      The command-line compiler, VBC.EXE, is installed as part of the freeware .NET
      Framework SDK. Mono also includes a command-line VB.NET compiler. The most recent version
      is VB 2012, which was released on August 15, 2012.
    </div>;
    }
    function content4() {
        return <div>
      Xamarin is a San Francisco, California based software company created in May
      2011[3] by the engineers that created Mono,[4] Mono for Android and MonoTouch that are
      cross-platform implementations of the Common Language Infrastructure (CLI) and Common
      Language Specifications (often called Microsoft .NET). With a C#-shared codebase,developers
      can use Xamarin tools to write native Android, iOS, and Windows apps with native user interfaces
      and share code across multiple platforms.[5] Xamarin has over 1 million developers in more
      than 120 countries around the World as of May 2015.'
    </div>;
    }
    function content5() {
        return <div>
      ASP.NET is an open-source server-side web application framework designed for web
      development to produce dynamic web pages. It was developed by Microsoft to allow programmers
      to build dynamic web sites, web applications and web services. It was first released in January
      2002 with version 1.0 of the .NET Framework, and is the successor to Microsoft\'\s Active Server
      Pages (ASP) technology. ASP.NET is built on the Common Language Runtime (CLR), allowing
      programmers to write ASP.NET code using any supported .NET language. The ASP.NET SOAP extension
      framework allows ASP.NET components to process SOAP messages.
    </div>;
    }
    function content6() {
        return <div>
      The ASP.NET MVC is a web application framework developed by Microsoft, which implements
      the model–view–controller (MVC) pattern. It is open-source software, apart from the ASP.NET Web
      Forms component which is proprietary. In the later versions of ASP.NET, ASP.NET MVC, ASP.NET web
      API, and ASP.NET Web Pages (a platform using only Razor pages) will merge into a unified MVC 6.
      The project is called ASP.NET vNext.
    </div>;
    }
    function content7() {
        return <div>
      JavaScript (JS) is an interpreted computer programming language. It was originally
      implemented as part of web browsers so that client-side scripts could interact with the
      user, control the browser, communicate asynchronously, and alter the document content that
      was displayed.[5] More recently, however, it has become common in both game development
      and the creation of desktop applications.
    </div>;
    }
    return (<TabComponent heightAdjustMode='Auto' overflowMode='Scrollable'>
      <TabItemsDirective>
        <TabItemDirective header={headerText[0]} content={content0}/>
        <TabItemDirective header={headerText[1]} content={content1}/>
        <TabItemDirective header={headerText[2]} content={content2}/>
        <TabItemDirective header={headerText[3]} content={content3}/>
        <TabItemDirective header={headerText[4]} content={content4}/>
        <TabItemDirective header={headerText[5]} content={content5}/>
        <TabItemDirective header={headerText[6]} content={content6}/>
        <TabItemDirective header={headerText[7]} content={content7}/>
      </TabItemsDirective>
    </TabComponent>);
}
const root = ReactDOM.createRoot(document.getElementById('element'));
root.render(<ReactApp />);
import { TabComponent, TabItemDirective, TabItemsDirective } from '@syncfusion/ej2-react-navigations';
import * as React from 'react';
import * as ReactDOM from 'react-dom';

function ReactApp() {
  let headerText: any = [{ text: "HTML" }, { text: "C Sharp(C#)" }, { text: "Java" }, { text: "VB.Net" }, { text: "Xamarin" }, { text: "ASP.NET" }, { text: "ASP.NET MVC" }, { text: "JavaScript" }];

  function content0() {
    return <div>
      HyperText Markup Language, commonly referred to as HTML, is the standard markup
      language used to create web pages. Along with CSS, and JavaScript, HTML is a cornerstone
      technology, used by most websites to create visually engaging web pages, user interfaces
      for web applications, and user interfaces for many mobile applications.[1] Web browsers
      can read HTML files and render them into visible or audible web pages. HTML describes
      the structure of a website semantically along with cues for presentation, making it a
      markup language, rather than a programming language.
    </div>;
  }
  function content1() {
    return <div>
      'C# is intended to be a simple, modern, general-purpose, object-oriented
      programming language. Its development team is led by Anders Hejlsberg. The most recent
      version is C# 5.0, which was released on August 15, 2012.
    </div>;
  }
  function content2() {
    return <div>
      Java is a set of computer software and specifications developed by Sun Microsystems,
      later acquired by Oracle Corporation, that provides a system for developing application
      software and deploying it in a cross-mobile phones to platform computing environment. Java
      is used in a wide variety of computing platforms from embedded devices and enterprise servers
      and supercomputers. While less common, Java applets run in secure, sandboxed environments to
      provide many features of native applications and can be embedded in HTML pages.
    </div>;
  }
  function content3() {
    return <div>
      The command-line compiler, VBC.EXE, is installed as part of the freeware .NET
      Framework SDK. Mono also includes a command-line VB.NET compiler. The most recent version
      is VB 2012, which was released on August 15, 2012.
    </div>;
  }
  function content4() {
    return <div>
      Xamarin is a San Francisco, California based software company created in May
      2011[3] by the engineers that created Mono,[4] Mono for Android and MonoTouch that are
      cross-platform implementations of the Common Language Infrastructure (CLI) and Common
      Language Specifications (often called Microsoft .NET). With a C#-shared codebase,developers
      can use Xamarin tools to write native Android, iOS, and Windows apps with native user interfaces
      and share code across multiple platforms.[5] Xamarin has over 1 million developers in more
      than 120 countries around the World as of May 2015.'
    </div>;
  }
  function content5() {
    return <div>
      ASP.NET is an open-source server-side web application framework designed for web
      development to produce dynamic web pages. It was developed by Microsoft to allow programmers
      to build dynamic web sites, web applications and web services. It was first released in January
      2002 with version 1.0 of the .NET Framework, and is the successor to Microsoft\'\s Active Server
      Pages (ASP) technology. ASP.NET is built on the Common Language Runtime (CLR), allowing
      programmers to write ASP.NET code using any supported .NET language. The ASP.NET SOAP extension
      framework allows ASP.NET components to process SOAP messages.
    </div>;
  }
  function content6() {
    return <div>
      The ASP.NET MVC is a web application framework developed by Microsoft, which implements
      the model–view–controller (MVC) pattern. It is open-source software, apart from the ASP.NET Web
      Forms component which is proprietary. In the later versions of ASP.NET, ASP.NET MVC, ASP.NET web
      API, and ASP.NET Web Pages (a platform using only Razor pages) will merge into a unified MVC 6.
      The project is called ASP.NET vNext.
    </div>;
  }
  function content7() {
    return <div>
      JavaScript (JS) is an interpreted computer programming language. It was originally
      implemented as part of web browsers so that client-side scripts could interact with the
      user, control the browser, communicate asynchronously, and alter the document content that
      was displayed.[5] More recently, however, it has become common in both game development
      and the creation of desktop applications.
    </div>;
  }

  return (
    <TabComponent heightAdjustMode='Auto' overflowMode='Scrollable'>
      <TabItemsDirective>
        <TabItemDirective header={headerText[0]} content={content0} />
        <TabItemDirective header={headerText[1]} content={content1} />
        <TabItemDirective header={headerText[2]} content={content2} />
        <TabItemDirective header={headerText[3]} content={content3} />
        <TabItemDirective header={headerText[4]} content={content4} />
        <TabItemDirective header={headerText[5]} content={content5} />
        <TabItemDirective header={headerText[6]} content={content6} />
        <TabItemDirective header={headerText[7]} content={content7} />
      </TabItemsDirective>
    </TabComponent>
  );
}
const root = ReactDOM.createRoot(document.getElementById('element'));
root.render(<ReactApp />);
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Syncfusion React Tab</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Essential JS 2 for React Components" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/21.1.35/material.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id='container'>
        <div id='element'>
                <div id='loader'>Loading</div>
        </div>
    </div>
</body>

</html>