DevExtreme Angular - Keyboard Support

An end user can use the following keys to interact with the widget.

Key Action
Alt + ↓ Opens the drop-down menu.
Enter or Backspace If the drop-down menu is closed, opens it; otherwise selects the current item.
Esc Closes the drop-down menu.
↑ / ↓ If the drop-down menu is opened, moves focus to the previous/next item.
Tab / Shift + Tab If the drop-down menu is opened, moves focus to the list / search field.

You can implement a custom handler for a key using the registerKeyHandler(key, handler) method.

TypeScript
  • import { ..., ViewChild, AfterViewInit } from '@angular/core';
  • import { DxLookupModule, DxLookupComponent } from 'devextreme-angular';
  • // ...
  • export class AppComponent implements AfterViewInit {
  • @ViewChild(DxLookupComponent, { static: false }) lookup: DxLookupComponent;
  • // Prior to Angular 8
  • // @ViewChild(DxLookupComponent) lookup: DxLookupComponent;
  •  
  • ngAfterViewInit () {
  • this.lookup.instance.registerKeyHandler('backspace', function(e) {
  • // The argument "e" contains information on the event
  • });
  • this.lookup.instance.registerKeyHandler('space', function(e) {
  • // ...
  • });
  • }
  • }
  • @NgModule({
  • imports: [
  • // ...
  • DxLookupModule
  • ],
  • // ...
  • })
See Also