Node js tutorial step by step 2 Basics Video Lecture | The Complete NodeJS Developer Course (in Hindi) - Back-End Programming

Ans. Node.js is an open-source, cross-platform JavaScript runtime environment that allows developers to execute JavaScript code outside of a web browser. It is commonly used for back-end development and provides a powerful and efficient platform for building server-side and networking applications.

Ans. Unlike traditional back-end programming languages such as Java or PHP, Node.js uses a non-blocking, event-driven architecture that makes it highly scalable and efficient. It allows for handling a large number of simultaneous connections without incurring much overhead. Additionally, Node.js uses JavaScript, a widely known and versatile language, making it easier for front-end developers to transition into back-end development.

Ans. Some key features of Node.js that make it popular for back-end programming include: - Non-blocking I/O: Node.js uses an asynchronous, non-blocking I/O model that allows it to handle multiple requests simultaneously without blocking the execution of other requests. - Scalability: Node.js is highly scalable and can handle a large number of concurrent connections efficiently. - Fast and lightweight: Node.js is built on the V8 JavaScript engine, which is known for its speed and performance. It has a small memory footprint and requires fewer resources compared to other back-end languages. - Single-threaded event loop: Node.js uses a single-threaded event loop model, which reduces the overhead of creating and managing multiple threads, resulting in better performance. - NPM ecosystem: Node.js has a rich ecosystem of open-source libraries and packages available through npm (Node Package Manager), making it easy to integrate and reuse code.

Ans. While Node.js is primarily used for back-end development, it can also be used for front-end development tasks such as building and bundling JavaScript modules, running build scripts, and creating development servers. Tools like webpack and Babel leverage the power of Node.js to enhance front-end development workflows.

Ans. To get started with Node.js, you can follow these steps: 1. Install Node.js: Visit the official Node.js website and download the latest version of Node.js for your operating system. Run the installer and follow the instructions. 2. Verify the installation: Open a terminal or command prompt and type "node -v" to check if Node.js is installed correctly. It should display the version number. 3. Write your first Node.js program: Create a new file with a .js extension and write your JavaScript code using the Node.js runtime environment. You can start with a simple "Hello, World!" program. 4. Run your Node.js program: In the terminal or command prompt, navigate to the directory where your JavaScript file is saved and type "node filename.js" to execute your Node.js program. 5. Explore Node.js modules and libraries: Node.js has a vast collection of modules and libraries that you can use to enhance your applications. Learn how to use npm (Node Package Manager) to install and manage these modules. Remember to refer to the official Node.js documentation, online tutorials, and resources to deepen your understanding and explore more advanced topics.