What is Node.js & First Program 🚀 || Backend Mastery with Nodejs || In Hindi || Death Code

What is Node.js?

Node.js is a JavaScript runtime built on Chrome's V8 JavaScript engine. It allows developers to run JavaScript on the server side, enabling the creation of scalable network applications.

Types of Engines

Node.js uses the V8 engine, which is developed by Google for Chrome. Other engines include SpiderMonkey (used by Firefox) and JavaScriptCore (used by Safari).

Who Developed JavaScript and Why?

JavaScript was developed by Brendan Eich in 1995 while working at Netscape. It was created to enable interactive web pages and has since evolved into a powerful programming language used for both client-side and server-side development.

How JavaScript Works in Web Browsers

JavaScript is executed in the browser's JavaScript engine, allowing it to manipulate the DOM, handle events, and communicate with servers via AJAX.

Why Do We Need Node.js?

Node.js allows developers to use JavaScript for server-side programming, enabling full-stack development with a single language. It is particularly useful for building fast and scalable network applications.

Advantages of Node.js

• Asynchronous and Event-Driven
• Fast Execution
• Single Programming Language for Both Client and Server
• Large Ecosystem of Libraries (npm)
• Scalability

Simple Node.js Program

Here is a simple Node.js program:

console.log("Hello World, By Death Code");

Installation Process of Node.js

To install Node.js, follow these steps:

1. Visit the official Node.js website: nodejs.org
2. Download the installer for your operating system.
3. Run the installer and follow the instructions.
4. Verify the installation by running node -v in your terminal.

Documentation Link

For more information, visit the official Node.js documentation: Node.js Documentation