What is MERN?
Category: Tools | Posted date: 2022-06-12 23:18:13 | Posted by: Admin
MERN is a MEAN stack variation that uses React rather than the standard Angular.js frontend framework. Another alternative is MEVN, which may be used with any frontend JavaScript framework.
Description of MERN
MERN stands for MongoDB, Express, React, and Node, the four primary technologies that make up the stack.
The intermediate layer is made up of Express and Node. Node.js is a popular and capable JavaScript server platform, while Express.js is a server-side web framework. Regardless of the form you use, MERN is the best method to work with JavaScript and JSON from start to finish.
React.js
At the top of the MERN stack is React.js, a declarative JavaScript framework for creating dynamic client-side programs in HTML. By linking basic Components to data on your backend server and presenting them as HTML, React allows you to develop complex interfaces.
React is a modern web framework that excels at managing stateful, data-driven interfaces with minimal code and effort. It also has all of the bells and whistles you'd expect from a modern web framework, such as strong support for forms, error handling, events, lists, and more.
Express.js and Node.js
The next level down is the Express.js server-side framework, which runs on top of a Node.js server. Express.js bills itself as a "quick, unopinionated, minimalist web framework for Node.js," which it is. Strong models are included in Express.js for URL routing (matching an incoming URL with a server function) and handling HTTP requests and responses.
Send XML HTTP Requests (XHRs), GETs, or POSTs from your React.js front-end to connect to Express.js functions that power your application. Those methods leverage MongoDB's Node.js drivers, either via callbacks or Promises, to access and alter data in your MongoDB database.
MongoDB
If your project contains data, you'll need a database that's as easy to use as React, Express, and Node.
JSON documents produced in your React.js front end may be delivered to the Express.js server, which will process them and store them in MongoDB for later retrieval if they're valid. If you're new to cloud production, Atlas is a great place to start.
MERN is a FULL-STACK
MERN is a full-stack application, with React.js as the front-end display tier, Express.js and Node.js as the application tier, and MySQL as the database layer (MongoDB).
