Easy “Hello World” Introduction to Angular Framework

Creating a “Hello World” application in Angular is a great way to get started with this popular JavaScript framework. Here’s a step-by-step tutorial to help you build your first Angular app:

Prerequisites:
Before you begin, make sure you have Node.js and npm (Node Package Manager) installed on your system. You can download and install them from the official website: https://nodejs.org/

Step 1: Install Angular CLI
Angular CLI (Command Line Interface) is a powerful tool for managing Angular applications. To install it, open your terminal and run the following command:

npm install -g @angular/cli

Step 2: Create a New Angular Project
Now that you have Angular CLI installed, you can create a new Angular project. Replace hello-world-app with your desired project name.

ng new hello-world-app

During the project creation process, you will be asked a few questions about features to include. You can choose the defaults for now. After project setup is complete, navigate to your project folder:

cd hello-world-app

Step 3: Create a Hello World Component
In Angular, components are the building blocks of your application. To create a new component, run:

ng generate component hello-world

This will generate a new component in the src/app directory.

Step 4: Update the Hello World Component
Open the hello-world.component.ts file in your favorite code editor and replace its content with the following:

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

@Component({
  selector: 'app-hello-world',
  template: '<h1>Hello, World!</h1>'
})
export class HelloWorldComponent {}

Step 5: Add the Hello World Component to the App
Open the src/app/app.component.html file and add the following line inside the <app-root></app-root> tags:

<app-hello-world></app-hello-world>

Step 6: Run the Angular Development Server
To see your “Hello World” app in action, start the Angular development server:

ng serve

This command will build your application and serve it on a development server. You should see an output message with a URL where your app is running, typically at http://localhost:4200/. Open your web browser and go to this URL to see your “Hello World” app.

Step 7: Congratulations
You have successfully created a “Hello World” Angular application. You can now modify and expand your app by adding more components, services, and functionality as you learn more about Angular.

Remember to stop the development server by pressing Enter in your terminal when you’re done working on your application.

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