Angular 8 Tutorial

Angular 8 Introduction History and versions of Angular 8 Architecture of Angular 8 How to install Angular 8 and set-up it. Creating our first Angular 8 app Angular 8 app loading

Difference between Angular And react

Angular vs react

Angular 8 Advantages Disadvantage

Advantage and Disadvantage of Angular 8

Angular 8 file structure

Angular 8 file structure

Angular 8 components

Components of Angular 8

Angular 8 CLI Commands

All CLI commands of Angular

Angular 8 with Bootstrap

How to install bootstrap for Angular 8 Libraries of Angular 8

Angular 8 Routing

Routing in Angular 8

Angular 8 directives

Angular 8 Directives Angular 8 ngIf directive Angular 8 ngFor directive Angular 8 ngSwitch directive Angular 8 ngClass directive Angular 8 ngStyle directive

Angular 8 pipes

Angular 8 Pipes

Angular 8 databinding

Angular 8 Data binding Angular 8 Event binding Angular 8 Property binding Two-way data binding in Angular 8

String Interpolation In Angular 8

Angular 8 String interpolation

Angular 8 forms

Angular 8 Forms Data flow of forms in Angular 8 Creating forms in Angular 8 Testing and validation of forms in Angular 8

Error fixing in Angular 8

Error fixing in Angular 8

Dependency injection and services in Angular 8

Dependency injection services in Angular 8

Angular 8 Animations

Angular 8 Animations

Dynamic components in Angular 8

Dynamic components in Angular 8

Angular 8 Module

Angular 8 Module Deploying an angular 8 app

Introduction of unit testing in angular 8

Unit testing in angular 8

Observables in angular 8

Observables in angular 8

Angular 8 universal

Angular 8 universal

Angular 8 Changes and new features

New features and changes in Angular 8

Conclusion

Angular 8 Conclusion

Two-way Data Binding in Angular 8

Two-way Data Binding in Angular 8

Two-way data binding is a synchronization between the model and the view. We can use the ngModel directive in two-way data binding. Custom two-way data binding is useful in form controls.

We have analyzed that in one-way data binding, changes in the template were not be reflected in the component Typescript code. To overcome this problem, Angular provides two-way data binding. The two-way Data binding has a feature to update data from component to the view and view to the component.

In the two-way data binding, property binding, and event binding, both are combined.

Two-way Data Binding in Angular 8

In two-way data binding, changes are reflected in both components. When we make changes in the model, it will be reflected in the view, and when we make changes in view, it will be reflected in the model.

Syntax:

[(ngModel)]= ”[property of our component]”
two-way data binding

Example:

Open project’s app.module.ts file and use the following code:

import {BrowserModule} from ‘@angular/platform-browser’;
import {NgModule } from ‘@angular/core’;
import { FormsModule} from ‘@angular/core’;
import{ AppComponent } from ‘./app.component’; 
@NgModule ({
declarations: [
AppComponent
], 
imports:[
BrowserModule,
FormsModule
], 
providers:[ ]
bootstrap:[AppComponent]
})
export class AppModule { } 
two way data binding

app.component.ts file:

import {Component } from “@angular/core”;
@Component({
selector : “app-root”;
templateUrl:”./app.component.html”,
styleUrls: [“./app.component.css”] 
})
export class AppComponent {
fullname: string=”Hello Javatpoint”;
} 
two way Data binding angular 8

app.component.html file:

Two-way Binding Example

 

 

{{fullName}}

open the localhost browser

Then start the server and open the localhost browser to the result.

Output:

two way data binding example

We can check it by changing the textbox value, and it changed automatically in the component.

For Example:

data binding angular



ADVERTISEMENT
ADVERTISEMENT