Describe the MERN-Stack
The expression MERN stack refers to technologies in the web development area, such as MongoDB, Express.js, React.js, and Node.js, which allow the user to build a full-stack application using JavaScript.
What is MongoDB's function in MERN Stack?
MongoDB is a NoSQL database that stores data into flexible objects presented in a JSON-like format called BSON. In MERN Stack, it serves the purpose of storage for large data, which is fast and provides scalable storage options.
What is Express.js, and how does it fit in MERN Stack?
Express.js is a web framework for Node.js and is good for back-end applications and APIs. It does the job of managing routing, middleware, and requests and responses for the MERN stack.
What is the role of React.js in MERN Stack?
React.js is a JavaScript library to build UI. MERN Stack uses React for front-end development to build dynamic and interactive UIs.
What is Node.js's function, and how does it fit into MERN Stack?
Node.js is a runtime environment that allows the JavaScript code to run at the server level. In the MERN Stack, Node.js does the job of back-end processing, it processes requests manages databases, and provides APIs.
What is the data communication pathway in the MERN Stack between Front and Back?
The front end uses React to communicate with back-end Node.js and Express through APIs. The back end processes the requests, interacts with MongoDB to either fetch or compute the required data, and sends it back to the front end.
API definition and purpose in the MERN stack?
An API (Application Programming Interface) makes it possible for the front end and back end to communicate. In the MERN, Express.js is used to build the APIs that will handle HTTP requests (GET, POST, PUT, DELETE) from the front end to the back end.
What is RESTful API, and how does MERN Stack implement it?
A RESTful API refers to the application programming interface following the REST architectural principles to communicate between the client and server. The traditional CRUD operations on the back are done using RESTful APIs in the MERN Stack.
How do you manage your state on the React-based front end?
The state can be managed in React through the useState and useEffect hooks for functional components. More significant and complex applications will often rely on libraries such as Redux for state management.
What are some famous tools and libraries that are frequently used in MERN Stack development?
Some well-known tools and libraries in the MERN Stack include:
- MongoDB as the database manager
- Mongoose for MongoDB
- Express.js for routing and middleware
- React Router for navigating within the application
- Redux for managing states
- Postman for testing APIs
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