Developers can run JavaScript on the server side with Node.js. It offers a huge selection of libraries for support and growth. Node.js operates outside of the browser, whereas JavaScript usually does so. Server-side (back-end) execution is done with Node.js.

What is Node.js?

An open-source, cross-platform runtime environment called Node.js enables server-side JavaScript execution. It is incredibly fast because it is based on Chrome's V8 engine. Node.js's non-blocking, event-driven architecture is one of its strongest features; it makes it easier to create high-performance applications. Because we can use the same language—JavaScript—for both front-end and back-end development, many Indian developers.

What are the main features of Node.js?

When should you use Node.js?

Thanks to its event-driven architecture, Node.js is a fantastic choice for real-time applications like collaboration tools, online games, and chat applications. It really shines when it comes to building scalable and lightweight RESTful APIs, especially when you're dealing with a lot of users or queries at the same time. Node.js also makes it easier to create modular and flexible systems that can grow alongside your application, particularly in a microservices-based setup.

How to Install Node.js

1. Open Visual Studio Code and launch the terminal to check if Node.js is installed. Just type this command into your terminal.

npm node -v

2. Create a folder and open it in the terminal:

mkdir simple-node-program
cd simple-node-program

First Program of Node.js

Step 1. Create a File

Create a new file and name it index.js.

Step 2. Write Code

Open the index.js file and add the following line:

console.log("Hello World!");

Step 3. Run the Program

Open your terminal, navigate to the folder where index.js is located, and run:

node index.js

Step 4. Output

Hello World!