Vue TextArea Methods
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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.
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blur()
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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 TextArea widget in an application executed on the desktop.
jQuery
DevExpress.ui.dxTextArea.defaultOptions({ device: { deviceType: "desktop" }, options: { // Here go the TextArea options } });
Angular
import TextArea from "devextreme/ui/text_area"; // ... export class AppComponent { constructor () { TextArea.defaultOptions({ device: { deviceType: "desktop" }, options: { // Here go the TextArea options } }); } }
Vue
<template> <div> <DxTextArea id="textArea1" /> <DxTextArea id="textArea2" /> </div> </template> <script> import DxTextArea from "devextreme-vue/text-area"; import TextArea from "devextreme/ui/text_area"; TextArea.defaultOptions({ device: { deviceType: "desktop" }, options: { // Here go the TextArea options } }); export default { components: { DxTextArea } } </script>
React
import React from "react"; import dxTextArea from "devextreme/ui/text_area"; import TextArea from "devextreme-react/text-area"; class App extends React.Component { render () { dxTextArea.defaultOptions({ device: { deviceType: "desktop" }, options: { // Here go the TextArea options } }) return ( <div> <TextArea id="textArea1" /> <TextArea id="textArea2" /> </div> ) } } export default App;
dispose()
After calling this method, remove the DOM element associated with the widget:
jQuery
$("#myTextArea").dxTextArea("dispose"); $("#myTextArea").remove();
Angular
<dx-text-area #textAreaVar id="myTextArea"></dx-text-area>
import { ..., ViewChild } from "@angular/core"; import { DxTextAreaComponent } from "devextreme-angular"; // ... export class AppComponent { @ViewChild("textAreaVar", { static: false }) textArea: DxTextAreaComponent; // Prior to Angular 8 // @ViewChild("textAreaVar") textArea: DxTextAreaComponent; removeTextArea (e) { this.textArea.instance.dispose(); document.getElementById("myTextArea").remove(); } }
element()
An HTML element or a jQuery element when you use jQuery.
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endUpdate()
Refreshes the widget after a call of the beginUpdate() method.
Main article: beginUpdate()
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focus()
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getInstance(element)
getInstance is a static method that the widget class supports. The following code demonstrates how to get the TextArea instance found in an element with the myTextArea
ID:
// Modular approach import TextArea from "devextreme/ui/text_area"; ... let element = document.getElementById("myTextArea"); let instance = TextArea.getInstance(element) as TextArea; // Non-modular approach let element = document.getElementById("myTextArea"); let instance = DevExpress.ui.dxTextArea.getInstance(element);
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instance()
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off(eventName)
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- Handle Events: Angular | Vue | React | jQuery | AngularJS | Knockout | ASP.NET MVC 5 | ASP.NET Core
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 widget options.
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)
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- Get and Set Options
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registerKeyHandler(key, handler)
A handler. Accepts the keydown event as the argument. It is a dxEvent or a jQuery.Event when you use jQuery.
The key argument accepts one of the following values:
- "backspace"
- "tab"
- "enter"
- "escape"
- "pageUp"
- "pageDown"
- "end"
- "home"
- "leftArrow"
- "upArrow"
- "rightArrow"
- "downArrow"
- "del"
- "space"
- "F"
- "A"
- "asterisk"
- "minus"
A custom handler for a key cancels the default handler for this key.
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repaint()
See Also
- reload() in DataSource | List
- refresh() in DataGrid | TreeList
- Call Methods: Angular | Vue | React | jQuery | AngularJS | Knockout | ASP.NET MVC 5 | ASP.NET Core
reset()
Resets the value option to the default value.
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