JavaScript/jQuery DropDownButton - Keyboard Support
An end user can use the following keys to interact with the UI component.
Key | Action |
---|---|
← | Moves focus to the action button when splitButton is enabled. |
→ | Moves focus to the toggle button when splitButton is enabled. |
Enter / Space | Opens the drop-down menu when the toggle button is focused. |
Simulates a click action when the action button is focused. | |
Selects a menu item when focused. | |
↑ / ↓ | Moves focus to the previous/following menu item. |
↓ | Opens the drop-down menu. |
Esc | Closes the drop-down menu. |
Page Up / Page Down | Moves focus to the first/last menu item on the page. |
Home / End | Moves focus to the first/last menu item. |
You can implement a custom handler for a key using the registerKeyHandler(key, handler) method.
App.js
- import React from 'react';
- import 'devextreme/dist/css/dx.common.css';
- import 'devextreme/dist/css/dx.light.css';
- import { DropDownButton } from 'devextreme-react/drop-down-button';
- class App extends React.Component {
- constructor(props) {
- super(props);
- this.dropDownButtonRef = React.createRef();
- }
- render() {
- return (
- <DropDownButton ref={this.dropDownButtonRef} />
- );
- }
- get dropDownButton() {
- return this.dropDownButtonRef.current.instance;
- }
- componentDidMount() {
- this.dropDownButton.registerKeyHandler('backspace', function(e) {
- // The argument "e" contains information on the event
- });
- this.dropDownButton.registerKeyHandler('space', function(e) {
- // ...
- });
- }
- }
- export default App;
See Also
- Call Methods: Angular | Vue | React | jQuery | AngularJS | Knockout | ASP.NET MVC 5 | ASP.NET Core
- DropDownButton Demos
- DropDownButton API Reference
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