DevExtreme jQuery - 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.
jQuery
JavaScript
function registerKeyHandlers () {
let lookup = $("#lookupContainer").dxLookup("instance");
lookup.registerKeyHandler("backspace", function (e) {
// The argument "e" contains information on the event
});
lookup.registerKeyHandler("space", function (e) {
// ...
});
}Angular
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
- Call Methods: Angular | Vue | React | jQuery | AngularJS | Knockout | ASP.NET MVC 5 | ASP.NET Core
- Lookup Demos
- Lookup API Reference
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