MERN is a full tech stack to develop the front and back end of any modern-day website or web application of any scale. M.E.R.N. stands for MongoDB, Express, React, and Node. These components play a major role in the development of web apps and offer developers an end-to-end framework to work.
Components of MERN Stack:
- MongoDB:
Each record in MongoDB is a document made up of key-value pairs that match JSON (JavaScript Object Notation) objects. MongoDB is a NoSQL database. Due to MongoDB's adaptability, users can build schema, databases, tables, etc. The fundamental building block of MongoDB is credentials that are made unique via a primary key. After installing MongoDB, users can also utilize the Mongo shell. Users can interact with Mongo Shell and perform actions including querying, updating records, and removing records through its JavaScript interface.
- Express.js:
For the Node.js framework, Express is a back-end web application framework. Express makes it simpler and easier to develop the back-end code than using Node.js and producing many Node modules. Great web apps and APIs can be created with the help of Express. Express offers a wide variety of middleware, which results in quicker and simpler code. Developers use Express to make developing server code simpler than manually writing the entire web server on Node.js directly. There's no need to keep saying the same code.
- ReactJS:
A JavaScript library called React is used to create user interfaces. Single-page web apps, big software applications, and mobile applications can all be built with React. React quickly to switch info that is changing a lot. With React, users may write JavaScript code and make UI components. React is a JavaScript package available as open source that may be used to create views that are shown in HTML. React is not a framework, in opposite to AngularJS. A library is available.
- Node.js:
a JavaScript runtime environment that is cross-platform and was initially developed for Google Chrome before being made available by Google in 2008. It has the ability to run JavaScript code outside of a browser and is designed to help create scalable network applications. The JavaScript Environment provided by Node.js allows users to run their code on the server (outside the browser). Instead of requiring an enclosing HTML page, Node.js completes multiple JavaScript files using a module system based on CommonJS.
Read more about MERN Stack here: What is MERN Stack? Introduction, Features
