Introduction:
Angular CLI (Command Line Interface) is a powerful tool used to generate, build and test Angular applications. It helps developers create Angular projects effortlessly and saves them a lot of time. Angular is a powerful JavaScript framework that facilitates the development of well-structured, readable, and maintainable applications. In this article, I will provide you with a tutorial on how to use Angular CLI to build an Angular application.
Getting Started with Angular CLI:
Before you start working with Angular CLI, you need to understand the benefits of using it. Angular CLI provides developers with a standardized workflow for Angular applications, making the creation of the application much easier. It is easy to use and automates many of the repetitive tasks that are involved in building an Angular application. The following are the steps to get started with Angular CLI:
Step 1: Install Node.js:
Node.js is a JavaScript runtime environment that is used to run JavaScript on the server-side. You can download and install it from the official Node.js website. Once Node.js is installed, open the terminal window and type the following command to check if Node.js is installed.
Code Block:
$ node –v
Step 2: Install Angular CLI:
Angular CLI can be installed using the Node Package Manager (NPM) in the terminal window of your operating system. The following command will download the latest version of Angular CLI:
Code Block:
$ npm install -g @angular/cli
To check if Angular CLI is installed, run the following command:
Code Block:
$ ng –version
Step 3: Create a New Angular Application:
Once Angular CLI is installed, you can start creating your Angular application by running the following command in the terminal window:
Code Block:
$ ng new my-app
This command will create a new Angular application with the name “my-app”. The Angular CLI will perform the following tasks when creating a new Angular project:
– Create a new project folder with the given name
– Install the necessary dependencies
– Create the default application files
Step 4: Serve Your Angular Application:
To start the server, navigate to the newly created application folder and run the following command:
Code Block:
$ cd my-app
$ ng serve
Once you run this command, the Angular CLI will start a server on your local machine and open your application in your default browser at http://localhost:4200/.
Step 5: Edit the Application:
You can now open your new Angular application in a code editor of your choice and start making the necessary edits. Angular CLI creates the necessary files and folders needed for the Angular application. The default files created are:
– index.html: This is the main HTML file and is used to load the Angular application.
– app.component.html: This file contains the HTML content for your application.
– app.component.ts: This file contains the TypeScript code for your application.
– app.module.ts: This file contains the configuration for your application.
Frequently Asked Questions (FAQs):
Q. What is Angular CLI?
A: Angular CLI (Command Line Interface) is a powerful tool used to generate, build and test Angular applications.
Q. What are the benefits of using Angular CLI?
A: Angular CLI provides a standardized workflow for Angular applications and automates many of the repetitive tasks that are involved in building an Angular application.
Q. How do I install Angular CLI?
A: Angular CLI can be installed using the Node Package Manager (NPM) in the terminal window of your operating system. The following command will download the latest version of Angular CLI:
$ npm install -g @angular/cli
Q. How do I create a new Angular application using Angular CLI?
A: Run the following command in the terminal window:
$ ng new my-app
Q. How do I serve my Angular application using Angular CLI?
A: Navigate to the newly created application folder and run the following command:
$ cd my-app
$ ng serve
Conclusion:
Angular CLI is a powerful tool that can help developers create Angular applications quickly and efficiently. It provides a standardized workflow for Angular applications and automates many repetitive tasks, which saves developers a lot of time. In this tutorial, we covered the basics of Angular CLI and how to create a new Angular application using it. By following these steps, you can create your Angular application effortlessly, which makes your development process smoother.