DevExtreme jQuery/JS - Keyboard Support
An end user can use the following keys to interact with the widget.
| Key | Action |
|---|---|
| Alt + ↓ | Opens the drop-down list. |
| Alt + ↑ | Closes the drop-down list. |
| Esc | Closes the drop-down list and removes focus from the widget. |
| ↑ / ↓ | If the drop-down list is opened, moves focus to the previous/next item; otherwise, selects the previous/next item. |
| Page Up / Page Down | Moves focus to the first/last item. |
| Enter or Space | Selects the item. |
You can implement a custom handler for a key using the registerKeyHandler(key, handler) method.
jQuery
JavaScript
function registerKeyHandlers () {
let selectBox = $("#selectBoxContainer").dxSelectBox("instance");
selectBox.registerKeyHandler("backspace", function (e) {
// The argument "e" contains information on the event
});
selectBox.registerKeyHandler("space", function (e) {
// ...
});
}Angular
TypeScript
import { ..., ViewChild, AfterViewInit } from "@angular/core";
import { DxSelectBoxModule, DxSelectBoxComponent } from "devextreme-angular";
// ...
export class AppComponent implements AfterViewInit {
@ViewChild(DxSelectBoxComponent, { static: false }) selectBox: DxSelectBoxComponent
// Prior to Angular 8
// @ViewChild(DxSelectBoxComponent) selectBox: DxSelectBoxComponent
ngAfterViewInit () {
this.selectBox.instance.registerKeyHandler("backspace", function (e) {
// The argument "e" contains information on the event
});
this.selectBox.instance.registerKeyHandler("space", function (e) {
// ...
});
}
}
@NgModule({
imports: [
// ...
DxSelectBoxModule
],
// ...
})See Also
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