beginUpdate()
Prevents the widget from refreshing until the endUpdate() method is called.
The beginUpdate() and endUpdate() methods prevent the widget from excessive updates when you are changing multiple widget settings at once. After the beginUpdate() method is called, the widget does not update its UI until the endUpdate() method is called.
See Also
- Call Methods: jQuery | Angular | AngularJS | Knockout | ASP.NET MVC
defaultOptions(rule)
defaultOptions is a static method that the widget class supports. The following code demonstrates how to specify default options for all instances of the Toolbar widget in an application executed on the desktop.
jQuery
DevExpress.ui.dxToolbar.defaultOptions({ device: { deviceType: "desktop" }, options: { // Here go the Toolbar options } });
Angular
import Toolbar from 'devextreme/ui/toolbar'; // ... export class AppComponent { constructor () { Toolbar.defaultOptions({ device: { deviceType: "desktop" }, options: { // Here go the Toolbar options } }); } }
dispose()
The following code disposes of an Toolbar instance that corresponds to the element ID (or reference variable in Angular) and removes the element from the DOM:
jQuery
$("#myToolbar").dxToolbar("dispose"); $("#myToolbar").remove();
Angular
<dx-toolbar #toolbarVar id="myToolbar"></dx-toolbar>
import { ..., ViewChild } from "@angular/core"; import { DxToolbarComponent } from "devextreme-angular"; // ... export class AppComponent { @ViewChild("toolbarVar") toolbar: DxToolbarComponent; removeToolbar (e) { this.toolbar.instance.dispose(); document.getElementById("myToolbar").remove(); } }
endUpdate()
Refreshes the widget after a call of the beginUpdate() method.
Main article: beginUpdate()
See Also
- Call Methods: jQuery | Angular | AngularJS | Knockout | ASP.NET MVC
getInstance(element)
getInstance is a static method that the widget class supports. The following code demonstrates how to get the Toolbar instance found in an element with the myToolbar
ID:
// Modular approach import Toolbar from 'devextreme/ui/toolbar'; ... let element = document.getElementById("myToolbar"); let instance = Toolbar.getInstance(element) as Toolbar; // Non-modular approach let element = document.getElementById("myToolbar"); let instance = DevExpress.ui.dxToolbar.getInstance(element);
See Also
If you have technical questions, please create a support ticket in the DevExpress Support Center.