It is easy to link the front-end to the backend APIs in React and render this data as HTML. It uses component architecture where users can create components(for example header components) and reuse these components when needed, this increases code reusability and reduces redundancy. ReactJS is used for creating dynamic user interfaces in Javascript. The front-end part of the MERN stack- ReactJS is an open-source javascript library by Facebook for front-end/user interface development. Express has the biggest community in Nodejs and helps build robust APIs. It helps us to connect the database as well as the front-end(ReactJS) to our backend. It is a fast, flexible and minimalist NodeJS framework that makes it easier and simpler to write back-end code that helps in adding functionality to make powerful web applications and APIs. ![]() ExpressJS is an open source NodeJS framework. Back-end(server-side) controls the main logic of the web application, handles the database functions and is a layer between the front-end and the database. NodeJS along with its framework- ExpressJS make the server-side (Backend) component of the MERN stack. Node Package Manager, to add more features and functionality that developers might want to add. Users can download thousands of free packages from NPM i.e. NodeJS works well with ExpressJS to build a flexible, highly scalable, and robust back-end. It is based on an event driven, non-blocking I/O model. With NodeJS which provides a JavaScript runtime environment, we can run our JavaScript code on the server-side (Outside the browser). JavaScript runs predominantly only on the browser. MongoDB can store vast volumes of data and thus makes it scalable. It is flexible and allows the user to create schema, collections, and documents. MongoDB is a document-oriented (NoSQL) database that stores data similar to the JSON format which means that data is stored as “key” : “value” pairs. Here is where MongoDB comes into the picture. If your application is collecting and storing data, you may need a database that works and integrates well with React, Node, and Express. Let us discuss these four MERN stack components in a little more detail: MongoDB ReactJS forms the front-end(client-side) of the application, NodeJS and ExpressJS form the back-end(server-side) and MongoDB is the NoSQL database used in this tech stack. ![]() It is backed by a vast community of developers and can be used in almost every field of development such as cross platform app development, game development, machine learning, front end development, backend development etc. Javascript is known for its simplicity and speed. It is designed to help build full-stack applications using just one language which is javascript. ![]() It provides full front-end development support along with a robust back-end and database management system. MERN stack is a popular Javascript stack that is used for building faster and reliable full-stack web applications which means it provides complete end-to-end development. The full form of MERN is MongoDB, ExpressJS, ReactJS and NodeJS. In this article we will understand what the MERN stack is, and more about this popular and trending javascript stack. Popularly, web developers use Javascript and HTML to work on advanced technology like the MERN stack which is used to build highly robust full stack applications. Developers have built different technology through which one can build interactive and responsive web applications. Web technology keeps advancing each day and there is a growing demand for seamless and enriching web applications. The demand for web developers has grown over 8 percent in the last decade.
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