DevExtreme Angular - Keyboard Support

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

Key Action
← Closes the submenu and focuses on its parent item.
→ Opens the submenu of the focused item.
Home Sets focus to the first item in the menu/submenu.
End Sets focus to the last item in the menu/submenu.
Space Switches the focused item to the selected state.
Enter Chooses the focused item.

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

jQuery
JavaScript
function registerKeyHandlers () {
    let menu =  $("#menuContainer").dxMenu("instance");
    menu.registerKeyHandler("backspace", function (e) {
        // The argument "e" contains information on the event
    });
    menu.registerKeyHandler("space", function (e) {
        // ...
    });
}
Angular
TypeScript
import { ..., ViewChild, AfterViewInit } from "@angular/core";
import { DxMenuModule, DxMenuComponent } from "devextreme-angular";
// ...
export class AppComponent implements AfterViewInit {
    @ViewChild(DxMenuComponent, { static: false }) menu: DxMenuComponent
    // Prior to Angular 8
    // @ViewChild(DxMenuComponent) menu: DxMenuComponent
    ngAfterViewInit () {
        this.menu.instance.registerKeyHandler("backspace", function (e) {
            // The argument "e" contains information on the event
        });
        this.menu.instance.registerKeyHandler("space", function (e) {
            // ...
        });
    }
}
@NgModule({
    imports: [
        // ...
        DxMenuModule
    ],
    // ...
})
See Also