Getting Started with Angular

What is Angular?

Angular is a platform that makes it easy to build applications with the web. Angular combines declarative templates, dependency injection, end to end tooling, and integrated best practices to solve development challenges. Angular empowers developers to build applications that live on the web, mobile, or the desktop.

Before you begin, make sure your development environment includes Node.js® and an npm package manager.

Node.js

Angular requires Node.js version 8.x or 10.x.

• To check your version, run node -v in a terminal/console window.
• To get Node.js, go to nodejs.org.

Recommended: How To Install Node.js on Ubuntu

npm package manager

Angular, the Angular CLI, and Angular apps depend on features and functionality provided by libraries that are available as npm packages. To download and install npm packages, you must have an npm package manager.

This Quick Start uses the npm client command line interface, which is installed with Node.js by default.

To check that you have the npm client installed, run npm -v in a terminal/console window.

Step 1: Install the Angular CLI

You use the Angular CLI to create projects, generate application and library code, and perform a variety of ongoing development tasks such as testing, bundling, and deployment.

Install the Angular CLI globally.

To install the CLI using npm, open a terminal/console window and enter the following command:

npm install -g @angular/cli

Step 2: Create a workspace and initial application

You develop apps in the context of an Angular workspace. A workspace contains the files for one or more projects. A project is the set of files that comprise an app, a library, or end-to-end (e2e) tests.

To create a new workspace and initial app project:

1. Run the CLI command ng new and provide the name my-app, as shown here:

   ng new my-app

1. The ng new command prompts you for information about features to include in the initial app project. Accept the defaults by pressing the Enter or Return key.

The Angular CLI installs the necessary Angular npm packages and other dependencies. This can take a few minutes.

It also creates the following workspace and starter project files:

• A new workspace, with a root folder named my-app
• An initial skeleton app project, also called my-app (in the src subfolder)
• An end-to-end test project (in the e2e subfolder)
• Related configuration files

The initial app project contains a simple Welcome app, ready to run.

Step 3: Serve the application

Angular includes a server, so that you can easily build and serve your app locally.

1. Go to the workspace folder (my-app).
2. Launch the server by using the CLI command ng serve, with the --open option.

cd my-app
ng serve --open

The ng serve command launches the server, watches your files, and rebuilds the app as you make changes to those files.

The --open (or just -o) option automatically opens your browser to http://localhost:4200/.

Step 4: Edit your first Angular component

Components

are the fundamental building blocks of Angular applications. They display data on the screen, listen for user input, and take action based on that input.

As part of the initial app, the CLI created the first Angular component for you. It is the root component, and it is named app-root.

1. Open ./src/app/app.component.ts.
2. Change the title property from 'my-app' to 'My First Angular App'.
   
   src/app/app.component.ts

 

• @Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
  })
  export class AppComponent {
    title = 'My First Angular App!';
  }

  The browser reloads automatically with the revised title. That’s nice, but it could look better.

• Open ./src/app/app.component.css and give the component some style.
  
  src/app/app.component.css

 

h1 {
  color: #369;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 250%;
}

---

I hope you like this post. Do you have any questions? Leave a comment down below!

Thanks for reading. If you like this post probably you might like my next ones, so please support me by subscribing my blog.

You may like also:

• How To Create Secure MQTT Broker
• Setting up Authentication in Mosquitto MQTT Broker
• IoT Communication APIs
• IoT Enabling Technologies
• Best Arduino IDE alternatives to start programming
• Best IoT Visual Programming Tools
• How to Send e-mail using NodeJS