Course Content
NODEJS Tutorial
About Lesson

Welcome to the exciting world of Node.js! If you’re new to programming or just starting your journey with Node.js, you’re in the right place. In this post, we’ll guide you through creating your first Node.js program. By the end, you’ll have a solid understanding of the basics and be ready to explore the vast possibilities that Node.js offers.

What is Node.js?

Node.js is a powerful, open-source JavaScript runtime built on Chrome’s V8 JavaScript engine. It allows developers to run JavaScript on the server side, enabling the development of scalable and high-performance applications. Whether you’re building web servers, APIs, or other networked software, Node.js has you covered.

Setting Up Your Environment:

Before we dive into coding, let’s set up your development environment. Follow these steps:

  1. Install Node.js: Visit the official Node.js website (https://nodejs.org/) and download the latest version. Follow the installation instructions for your operating system.

  2. Verify Installation: Open your terminal or command prompt and type the following commands to check if Node.js and npm (Node Package Manager) are installed:

    node -v
    npm -v

    If installed correctly, you’ll see the versions of Node.js and npm.

Creating Your First Node.js Program:

Now that your environment is set up, let’s create a simple “Hello, Node.js!” program.

  1. Create a New File: Open your favorite text editor and create a new file. Save it with a “.js” extension, for example, hello.js.

  2. Write Your Code: In your hello.js file, enter the following code:

    // hello.js
    console.log("Hello, Node.js!");
  3. Run Your Program: Open your terminal, and navigate to the directory containing hello.js, and run the following command:

    node hello.js

    You should see the output: “Hello, Node.js!” Congratulations! You’ve just run your first Node.js program.

Understanding the Code:

Let’s break down the code:

  • console.log: This is a function that prints the specified message to the console.