Getting Started with Node.js: Setup and Hello World

utside the browser and even build your own web servers. In this post, we’ll walk through setting up Node.js on your computer and writing your very first “Hello World” program.

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🛠 Step 1: Install Node.js

There are two main ways to install Node.js:

• Quick Start (Beginner Friendly): Download the official Node.js LTS installer. This is the fastest way to get started.
• Developer Way (Recommended): Use Node Version Manager (nvm), which lets you install and switch between multiple versions of Node.js — something you’ll need as you grow into a developer.

Now, let’s install Node.js using the quick start method:

1. Go to the Node.js download page.
2. Download the latest LTS (Long Term Support) version (recommended for beginners).
3. Run the installer. If you see an option to also install extra tools (like Python and Visual Studio via Chocolatey), select it — it saves time later.

👉 To check if it worked, open your terminal/command prompt and type:

node -v
npm -v

You should see the installed versions of Node.js and npm (the Node.js package manager).

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📂 Step 2: Create a Project Folder

Let’s create a folder to keep your code organized. In your terminal:

mkdir my-first-node-app
cd my-first-node-app

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👩‍💻 Step 3: Write Your First Program

Inside your folder, create a file named app.js. Add this code:

// app.js
console.log("Hello, World from Node.js!");

Now run it:

node app.js

✅ You should see this output in your terminal:

Hello, World from Node.js!

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🌐 Step 4: Create a Simple Web Server

Let’s go a step further and make Node.js serve a web page. Replace the code in app.js with this:

// app.js
const http = require("http");

// Create a server
const server = http.createServer((req, res) => {
  res.statusCode = 200;
  res.setHeader("Content-Type", "text/plain");
  res.end("Hello, World from Node.js Server!\n");
});

// Start the server on port 3000
server.listen(3000, () => {
  console.log("Server running at http://localhost:3000/");
});

Run it again:

node app.js

Now open your browser and go to http://localhost:3000.

🎉 You’ll see your first Node.js web page!

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🧠 How It Works

• console.log prints messages to your terminal.
• http.createServer creates a simple server.
• server.listen(3000) tells it to listen on port 3000.

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✅ Key Takeaway

With just a few steps, you’ve:

• Installed Node.js
• Written a basic program
• Built a simple web server

This is the foundation of Node.js development. From here, you can start exploring frameworks like Express.js or even full-stack solutions like Next.js to make server building even easier.