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Text Area

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Documentation
The TextArea is a widget that enables a user to enter and edit a multi-line text.
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<div class="dx-fieldset"> <div class="dx-fieldset-header">Default Mode</div> <div class="dx-field"> <dx-check-box [value]="false" (onValueChanged)="onCheckboxValueChanged($event)" text="Limit text length"> </dx-check-box> </div> </div> <div class="left-content"> <dx-text-area [height]="90" [maxLength]="maxLength" [(value)]="value"> </dx-text-area> </div> <div class="full-width-content"> <div class="dx-fieldset"> <div class="dx-fieldset-header">Event Handling and API</div> <div class="dx-field"> <div class="dx-field-label">Synchronize text areas </div> <div class="dx-field-value"> <dx-select-box [items]="valueChangeEvents" valueExpr="name" displayExpr="title" [(value)]=eventValue> </dx-select-box> </div> </div> </div> <dx-text-area [height]="90" [(value)]="valueForEditableTextArea" [valueChangeEvent]="eventValue"> </dx-text-area> <dx-text-area [height]="90" [readOnly]="true" [(value)]="valueForEditableTextArea"> </dx-text-area> </div>
import { Component, NgModule } from '@angular/core'; import { BrowserModule } from '@angular/platform-browser'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { DxTextAreaModule, DxCheckBoxModule, DxSelectBoxModule } from 'devextreme-angular'; import { Service } from './app.service'; @Component({ selector: 'demo-app', templateUrl: 'app/app.component.html', styleUrls: ['app/app.component.css'], providers: [Service] }) export class AppComponent { valueChangeEvents: any[]; eventValue: string; maxLength = null; value: string; valueForEditableTextArea: string; constructor(private service: Service) { this.valueForEditableTextArea = this.service.getContent(); this.value = this.service.getContent(); this.valueChangeEvents = [{ title: 'On Blur', name: 'change' }, { title: 'On Key Up', name: 'keyup' }]; this.eventValue = this.valueChangeEvents[0].name; } onCheckboxValueChanged(e) { if (e.value) { this.value = this.service.getContent().substring(0, 100); this.maxLength = 100; } else { this.value = this.service.getContent(); this.maxLength = null; } } } @NgModule({ imports: [ BrowserModule, DxTextAreaModule, DxCheckBoxModule, DxSelectBoxModule ], declarations: [AppComponent], bootstrap: [AppComponent] }) export class AppModule { } platformBrowserDynamic().bootstrapModule(AppModule);
/deep/ .full-width-content { width: 100%; margin-top: 30px; } /deep/ .full-width-content > .dx-widget { margin-bottom: 20px; } /deep/ .full-width-content .dx-field { max-width: 385px; }
import { Injectable } from "@angular/core"; let content = "Prepare 2013 Marketing Plan: We need to double revenues in 2013 and our marketing strategy is going to be key here. R&D is improving existing products and creating new products so we can deliver great AV equipment to our customers.Robert, please make certain to create a PowerPoint presentation for the members of the executive team."; @Injectable() export class Service { getContent(){ return content; } }
// In real applications, you should not transpile code in the browser. You can see how to create your own application with Angular 2 and DevExtreme here: // https://github.com/DevExpress/devextreme-angular/blob/master/README.md System.config({ transpiler: 'ts', typescriptOptions: { module: "commonjs", emitDecoratorMetadata: true, experimentalDecorators: true }, meta: { 'typescript': { "exports": "ts" } }, paths: { 'npm:': 'https://unpkg.com/' }, map: { 'ts': 'npm:plugin-typescript@7.0.6/lib/plugin.js', 'typescript': 'npm:typescript@2.2.2/lib/typescript.js', '@angular/core': 'npm:@angular/core@4.1.0/bundles/core.umd.js', '@angular/common': 'npm:@angular/common@4.1.0/bundles/common.umd.js', '@angular/compiler': 'npm:@angular/compiler@4.1.0/bundles/compiler.umd.js', '@angular/platform-browser': 'npm:@angular/platform-browser@4.1.0/bundles/platform-browser.umd.js', '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic@4.1.0/bundles/platform-browser-dynamic.umd.js', '@angular/http': 'npm:@angular/http@4.1.0/bundles/http.umd.js', '@angular/router': 'npm:@angular/router@4.1.0/bundles/router.umd.js', '@angular/forms': 'npm:@angular/forms@4.1.0/bundles/forms.umd.js', 'rxjs': 'npm:rxjs@5.3.1', 'devextreme': 'npm:devextreme@17.1', 'jquery': 'npm:jquery@3.1.1/dist/jquery.min.js', 'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js', 'devextreme-angular': 'npm:devextreme-angular@17.1' }, packages: { 'app': { main: './app.component.ts', defaultExtension: 'ts' }, 'devextreme': { defaultExtension: 'js' }, 'devextreme-angular': { main: 'index.js', defaultExtension: 'js' } } });
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>DevExtreme Demo</title> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/17.1.3/css/dx.spa.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/17.1.3/css/dx.common.css" /> <link rel="dx-theme" data-theme="generic.light" href="https://cdn3.devexpress.com/jslib/17.1.3/css/dx.light.css" /> <link rel="dx-theme" data-theme="android5.light" href="https://cdn3.devexpress.com/jslib/17.1.3/css/dx.android5.light.css" /> <link rel="dx-theme" data-theme="ios7.default" href="https://cdn3.devexpress.com/jslib/17.1.3/css/dx.ios7.default.css" /> <link rel="dx-theme" data-theme="win10.black" href="https://cdn3.devexpress.com/jslib/17.1.3/css/dx.win10.black.css" /> <link rel="dx-theme" data-theme="win10.white" href="https://cdn3.devexpress.com/jslib/17.1.3/css/dx.win10.white.css" /> <script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script> <script src="https://unpkg.com/zone.js@0.6.25/dist/zone.js"></script> <script src="https://unpkg.com/reflect-metadata@0.1.3/Reflect.js"></script> <script src="https://unpkg.com/systemjs@0.19.31/dist/system.js"></script> <script src="config.js"></script> <script> System.import('app').catch(console.error.bind(console)); </script> </head> <body class="dx-viewport"> <div class="demo-container"> <demo-app>Loading...</demo-app> </div> </body> </html>