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Introduction to Node

Node.js is a JavaScript runtime environment that allows developers to write server-side code using JavaScript. Itu2019s widely used for backend development because it is fast, scalable, and event-driven, making it ideal for building web servers, REST APIs, and real-time applications. With Node.js, developers can use a single language (JavaScript) for both frontend and backend, simplifying full-stack development. Popular frameworks like Express.js enhance Node.js capabilities, enabling rapid application development. Many companies, including Netflix, PayPal, and LinkedIn, rely on Node.js for their

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Introduction to Node

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  1. Introduction to Node.js This Node.js tutorial provides an overview of the fundamental concepts of Node.js, covering installation processes, essential core modules, and how to create basic applications. It is designed to empower beginners with the foundational knowledge necessary for embarking on their server-side JavaScript development journey. 📍 Contact Info:G-13, 2nd Floor, Sec-3, Noida, UP, 201301, India ✉ hr@tpointtech.com📞 +91-9599086977 https://www.tpointtech.com/nodejs-tutorial

  2. Introduction to Node.js Node.js is a powerful and versatile platform that allows developers to use JavaScript for server-side programming. Its event-driven architecture ensures scalability and efficiency in network application development. What is Node.js? Event-driven architecture JavaScript on the server An open-source, cross-platform runtime environment for executing JavaScript code outside browsers. Utilizes a non-blocking I/O model, enhancing efficiency for scalable network applications. Enables developers to use JavaScript for backend development, promoting a unified programming language.

  3. Setting Up the Environment 1 2 3 Installing Node.js Setting up npm Verifying installation Download and install Node.js from the official website. npm comes bundled with Node.js for managing libraries. Run 'node -v' and 'npm -v' in the terminal.

  4. Understanding Core Modules Node.js provides built-in modules which simplify the implementation of key functionalities for developers. This includes modules for HTTP requests and file system operations, enabling efficient server management and file handling. Built-in modules Using the http module File system operations Node.js includes modules like http, fs, and path without needing extra libraries. This module allows creation of HTTP servers and clients for handling web requests. The fs module enables reading, writing, and updating server files.

  5. Creating a Simple Web Server Setting up an HTTP server Handling requests Sending responses Using the http module to create a web server. Capture and respond to client requests based on URL and method. Use res.write() and res.end() for sending data.

  6. Introduction to npm Packages Creating a package.json This file helps manage your project's dependencies, scripts, and metadata, paving the way for better project organization. 2 Installing packages Learn how to utilize npm to install third-party packages that can enhance your Node.js applications, adding features and functionality effortlessly. 1 Updating and removing packages Understand how to update existing packages and remove no longer needed packages to keep your project clean and efficient. 3

  7. Asynchronous Programming Understanding Callbacks Node.js uses callbacks for asynchronous operations. Promises and Async/Await Modern alternatives for cleaner and readable code. Error Handling Strategies include .catch() and try/catch.

  8. Building RESTful APIs Creating RESTful services Using Express.js Testing your API Learn how to create RESTful APIs with Node.js by defining endpoints for handling HTTP methods like GET, POST, PUT, and DELETE. Get introduced to Express.js, a lightweight web application framework that simplifies routing and middleware, making API development faster and more efficient. Explore tools like Postman to test your API endpoints and verify that they are functioning as expected and returning the correct responses.

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