Two-Way Data Binding in Angular 6

Create New Project

Create new folder named learnangular5withrealapps and select to this folder in Visual Studio Code

Install Angular 6

Open Terminal windows in Visual Studio Code and type: npm install -g @angular/cli to install Angular 6

Structure of Project

Create Component

Create new TypeScript file, named app.component.ts in src\app folder. In this component, create values bind two-way with form

import { Component, OnInit } from '@angular/core';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html'
})

export class AppComponent implements OnInit {

  result: string;

  ngOnInit() {
    this.result = 'Use Two-Way';
  }

}

Create View

Create new file, named app.component.html in src\app folder.

<form>
    <input type="text" [(ngModel)]="result" [ngModelOptions]="{standalone: true}">
    <br>
    {{result}}
</form>

Add Component to Module

In app.module.ts file in src\app folder. Add new component to module

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';

import { AppComponent } from './app.component';

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    FormsModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})

export class AppModule { }

Run Application

In Terminal windows in Visual Studio Code and type: ng serve –open, program will open url http://localhost:4200/ on browser

Output

References

I recommend you refer to the books below to learn more about the knowledge in this article:

• Pro Angular 6
• Angular 6 for Enterprise-Ready Web Applications: Deliver production-ready and cloud-scale Angular web apps
• ng-book: The Complete Guide to Angular
• Angular in Action
• Mastering TypeScript – Second Edition
• Pro TypeScript: Application-Scale JavaScript Development