Accessibility in React Drop down button component

30 Jan 20235 minutes to read

ARIA attributes

The web accessibility makes web content and web applications more accessible for people with disabilities.
It especially helps in dynamic content change and development of advanced user interface controls
with AJAX, HTML, JavaScript, and related technologies. DropDownButton provides built-in compliance
with WAI-ARIA specifications.WAI-ARIA support is achieved through the attributes like
aria-expanded, aria-owns and aria-haspopup applied for action item in DropDownButton.
It helps the people with disabilities by providing information about the widget for assistive
technology in the screen readers. DropDownButton component contains the menu role and menuItem role.

Properties	Functionality
menu	This role will be specified for an DropDownButton element.
menuItem	This role will be specified for an action items.
aria-haspopup	Indicates the availability and type of interactive dropdown popup element.
aria-expanded	Indicates whether the dropdown popup can be expanded or collapsed, as well as indicates whether its current state is expanded or collapsed.
aria-owns	Identifies an elements in order to define a visual, functional, or contextual parent/child relationship between DOM elements where the DOM hierarchy cannot be used to represent the relationship.

Keyboard interaction

Keyboard shortcuts	Actions
`Esc`	Closes the opened popup.
`Enter`	Opens the popup, or activates the highlighted item and closes the popup.
`Space`	Opens the popup.
`Up`	Navigates up or to the previous action item.
`Down`	Navigates down or to the next action item.
`Alt + Up Arrow`	Closes the popup.
`Alt + Down Arrow`	Opens the popup

app.jsx
app.tsx
import { enableRipple } from '@syncfusion/ej2-base';
import { DropDownButtonComponent } from '@syncfusion/ej2-react-splitbuttons';
import * as React from 'react';
import * as ReactDom from 'react-dom';
enableRipple(true);
// To render DropDownButton.
function App() {
    let items = [
        {
            text: 'Cut',
            iconCss: 'e-db-icons e-cut'
        },
        {
            text: 'Copy',
            iconCss: 'e-icons e-copy'
        },
        {
            text: 'Paste',
            iconCss: 'e-db-icons e-paste'
        },
        {
            separator: true
        },
        {
            text: 'Font',
            iconCss: 'e-db-icons e-font'
        },
        {
            text: 'Paragraph',
            iconCss: 'e-db-icons e-paragraph'
        }
    ];
    return (<div>
         <DropDownButtonComponent items={items} iconCss='e-icons e-edit'> Edit </DropDownButtonComponent>
      </div>);
}
export default App;
ReactDom.render(<App />, document.getElementById('button'));
import { enableRipple } from '@syncfusion/ej2-base';
import { DropDownButtonComponent, ItemModel } from '@syncfusion/ej2-react-splitbuttons';
import * as React from 'react';
import * as ReactDom from 'react-dom';

enableRipple(true);

// To render DropDownButton.
function App() {
  let items: ItemModel[] = [
    {
        text: 'Cut',
        iconCss: 'e-db-icons e-cut'
    },
    {
        text: 'Copy',
        iconCss: 'e-icons e-copy'
    },
    {
        text: 'Paste',
        iconCss: 'e-db-icons e-paste'
    },
    {
        separator: true
    },
    {
        text: 'Font',
        iconCss: 'e-db-icons e-font'
    },
    {
        text: 'Paragraph',
        iconCss: 'e-db-icons e-paragraph'
    }];

    return (
      <div>
         <DropDownButtonComponent items = {items} iconCss= 'e-icons e-edit'> Edit </DropDownButtonComponent>
      </div>
    );
}
export default App;
ReactDom.render(<App />,document.getElementById('button'));