JavaScript/jQuery LoadPanel Methods
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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.
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content()
An HTML element or a jQuery element when you use jQuery.
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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 LoadPanel UI component in an application executed on the desktop.
jQuery
DevExpress.ui.dxLoadPanel.defaultOptions({ device: { deviceType: "desktop" }, options: { // Here go the LoadPanel options } });
Angular
import LoadPanel from "devextreme/ui/load_panel"; // ... export class AppComponent { constructor () { LoadPanel.defaultOptions({ device: { deviceType: "desktop" }, options: { // Here go the LoadPanel options } }); } }
Vue
<template> <div> <DxLoadPanel id="loadPanel1" /> <DxLoadPanel id="loadPanel2" /> </div> </template> <script> import DxLoadPanel from "devextreme-vue/load-panel"; import LoadPanel from "devextreme/ui/load_panel"; LoadPanel.defaultOptions({ device: { deviceType: "desktop" }, options: { // Here go the LoadPanel options } }); export default { components: { DxLoadPanel } } </script>
React
import React from "react"; import dxLoadPanel from "devextreme/ui/load_panel"; import LoadPanel from "devextreme-react/load-panel"; class App extends React.Component { render () { dxLoadPanel.defaultOptions({ device: { deviceType: "desktop" }, options: { // Here go the LoadPanel options } }) return ( <div> <LoadPanel id="loadPanel1" /> <LoadPanel id="loadPanel2" /> </div> ) } } export default App;
dispose()
After calling this method, remove the DOM element associated with the UI component:
$("#myLoadPanel").dxLoadPanel("dispose"); $("#myLoadPanel").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-load-panel ... *ngIf="condition"> </dx-load-panel>
Vue
<template> <DxLoadPanel ... v-if="condition"> </DxLoadPanel> </template> <script> import DxLoadPanel from 'devextreme-vue/load-panel'; export default { components: { DxLoadPanel } } </script>
React
import React from 'react'; import LoadPanel from 'devextreme-react/load-panel'; function DxLoadPanel(props) { if (!props.shouldRender) { return null; } return ( <LoadPanel ... > </LoadPanel> ); } class App extends React.Component { render() { return ( <DxLoadPanel shouldRender="condition" /> ); } } export default App;
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element()
An HTML element or a jQuery element when you use jQuery.
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endUpdate()
Refreshes the UI component after a call of the beginUpdate() method.
Main article: beginUpdate()
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getInstance(element)
getInstance is a static method that the UI component class supports. The following code demonstrates how to get the LoadPanel instance found in an element with the myLoadPanel
ID:
// Modular approach import LoadPanel from "devextreme/ui/load_panel"; ... let element = document.getElementById("myLoadPanel"); let instance = LoadPanel.getInstance(element) as LoadPanel; // Non-modular approach let element = document.getElementById("myLoadPanel"); let instance = DevExpress.ui.dxLoadPanel.getInstance(element);
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hide()
A Promise that is resolved after the UI component is hidden. It is a native Promise or a jQuery.Promise when you use jQuery.
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instance()
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off(eventName)
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off(eventName, eventHandler)
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on(eventName, eventHandler)
Use this method to subscribe to one of the events listed in the Events section.
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on(events)
Use this method to subscribe to several events with one method call. Available events are listed in the Events section.
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- Handle Events: Angular | Vue | React | jQuery | AngularJS | Knockout | ASP.NET MVC 5 | ASP.NET Core
option()
Gets all UI component properties.
See Also
- Get and Set Options
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option(optionName)
See Also
- Get and Set Options
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option(optionName, optionValue)
See Also
- Get and Set Options
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option(options)
See Also
- Get and Set Options
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repaint()
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resetOption(optionName)
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show()
A Promise that is resolved after the UI component is shown. It is a native Promise or a jQuery.Promise when you use jQuery.
toggle(showing)
A Promise that is resolved with true if the UI component is shown or false if it is hidden. It is a native Promise or a jQuery.Promise when you use jQuery.
You can use this method instead of the show() and hide() methods. In this case, pass true or false as the method parameter to show or hide the UI component.
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