React Toolbar Methods
beginUpdate()
Prevents the UI component from refreshing until the endUpdate() method is called.
The beginUpdate() and endUpdate() methods prevent the UI component from excessive updates when you are changing multiple UI component settings at once. After the beginUpdate() method is called, the UI component does not update its UI until the endUpdate() method is called.
See Also
defaultOptions(rule)
defaultOptions is a static method that the UI component class supports. The following code demonstrates how to specify default properties for all instances of the Toolbar UI component in an application executed on the desktop.
jQuery
DevExpress.ui.dxToolbar.defaultOptions({ device: { deviceType: "desktop" }, options: { // Here go the Toolbar properties } });
Angular
import Toolbar from "devextreme/ui/toolbar"; // ... export class AppComponent { constructor () { Toolbar.defaultOptions({ device: { deviceType: "desktop" }, options: { // Here go the Toolbar properties } }); } }
Vue
<template> <div> <DxToolbar id="toolbar1" /> <DxToolbar id="toolbar2" /> </div> </template> <script> import DxToolbar from "devextreme-vue/toolbar"; import Toolbar from "devextreme/ui/toolbar"; Toolbar.defaultOptions({ device: { deviceType: "desktop" }, options: { // Here go the Toolbar properties } }); export default { components: { DxToolbar } } </script>
React
import React, {useEffect} from "react"; import dxToolbar from "devextreme/ui/toolbar"; import Toolbar from "devextreme-react/toolbar"; export default function App() { useEffect(() => { dxToolbar.defaultOptions({ device: { deviceType: "desktop" }, options: { // Here go the Toolbar properties } }) }); return ( <div> <Toolbar id="toolbar1" /> <Toolbar id="toolbar2" /> </div> ) }
dispose()
After calling this method, remove the DOM element associated with the UI component:
$("#myToolbar").dxToolbar("dispose"); $("#myToolbar").remove();
Use this method only if the UI component was created with jQuery or pure JavaScript. In Angular, Vue, and React, use conditional rendering:
Angular
<dx-toolbar ... *ngIf="condition"> </dx-toolbar>
Vue
<template> <DxToolbar ... v-if="condition"> </DxToolbar> </template> <script> import DxToolbar from 'devextreme-vue/toolbar'; export default { components: { DxToolbar } } </script>
React
import React from 'react'; import Toolbar from 'devextreme-react/toolbar'; function DxToolbar(props) { if (!props.shouldRender) { return null; } return ( <Toolbar ... > </Toolbar> ); } class App extends React.Component { render() { return ( <DxToolbar shouldRender="condition" /> ); } } export default App;
See Also
getDataSource()
Gets the DataSource instance.
See Also
- Call Methods: Angular | Vue | React | jQuery | AngularJS | Knockout
- Data Layer - Overview
- Data Layer - DataSource Examples
getInstance(element)
getInstance is a static method that the UI component 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.