This initial module establishes a robust foundation in core front-end technologies. Learners will master HTML5 for semantic document structure, and CSS3 for styling, including modern layout techniques like Flexbox and Grid for building responsive user interfaces. The module’s primary focus then shifts to JavaScript (ES6+), covering core programming concepts, the Document Object Model (DOM) manipulation, asynchronous programming with Promises and async/await, and object-oriented principles. This mastery of JavaScript is critical, as it serves as the unifying language across the entire MERN stack.
The course transitions to modern front-end development using React.js. The focus is on the component-based architecture, understanding how to break down complex UIs into reusable, modular pieces. Key concepts include JSX syntax, creating functional components, managing data flow via Props, and handling internal component state using the useState Hook. Learners will also explore the useEffect Hook for side effects (like data fetching) and manage client-side routing using React Router to create performant Single Page Applications (SPAs).
This module introduces the back-end environment, beginning with Node.js, the JavaScript runtime environment that allows server-side execution. Learners will understand its event-driven, non-blocking I/O model and its reliance on the Node Package Manager (npm). The core of the module focuses on Express.js, the minimal and flexible Node.js web application framework. Students will learn to set up a basic server, manage application routing, and utilize middleware functions for tasks such as request body parsing and authentication checks, laying the groundwork for building scalable APIs.
This module introduces MongoDB, the NoSQL document database that forms the data layer of the MERN stack. Unlike traditional relational databases, MongoDB stores data in flexible, JSON-like documents (BSON), aligning seamlessly with the JavaScript format used in React and Node. The focus will be on performing CRUD (Create, Read, Update, Delete) operations and designing appropriate data models using Mongoose, an Object Data Modeling (ODM) library for Node.js. Learners will establish the connection between the Express server and the MongoDB instance, preparing for full-stack integration.
Synthesizing the front-end and back-end skills, this module concentrates on designing and building RESTful APIs using the Express.js and MongoDB setup. Learners will define API endpoints (/api/users, /api/posts) and implement the CRUD functionality to handle HTTP requests (GET, POST, PUT, DELETE) and responses, ensuring data is transferred efficiently in JSON format. Crucially, the module covers Full-Stack Integration, focusing on how the React front-end uses tools like Axios or the native Fetch API to consume the endpoints created in Express, completing the loop of the web application.
The course culminates in a Mini Project, requiring the learner to apply the entire MERN stack to build a complete, functional, and integrated web application (e.g., a simple task manager or blog application). This project-based module emphasizes the practical skills of database modeling, API design, front-end component separation, and the critical process of managing state and data flow across the server and client. The final deliverable includes basic setup for model deployment, showcasing a comprehensive, end-to-end understanding of full-stack development.