The MERN Stack: Everything You Need to Know
The MERN stack is receiving increasingly popular and is a solid one to work in. If you know how to build and run good MERN apps, it will help your career as a developer a lot.
Describe the MERN Stack
MERN Stack is an acronym for MongoDB, Express, React, and Node, four of the stack’s most critical technologies.
MongoDB, Express, React, and NodeJS are shortened to MERN. MERN stack is a set of technologies based on JavaScript used to build full-stack websites. MERN stands for MongoDB, utter.js, React.js, and Node.js. These four technologies can be used together to make impressive web apps.
Web development is a broad field with many subdivisions, such as front-end development, back-end development, full-stack development, and so on. A full stack is a combination of the front end and the back end. Developers need to know about client-side and server-side technologies when doing full-stack development.
Frameworks like Angular, React, Radix, Svelte, Vue, spine, Polymer, cinder, etc., are used for the front-end technologies.
On the other hand, the backend technology includes PHP, NodeJS, MySQL, Python(Django), etc.
Full-stack means that both front-end and back-end technologies are used together.
So, if you want to be a Full-Stack developer, MERN Stack is something you need to get your hands on it.
MongoDB — document database
MongoDB is the first part. It is a NoSQL database management system.
Express(.js) — Node.js web framework
ExpressJS is the second part of the MERN stack. It is a framework for back-end web applications for NodeJS.
React(.js) is a JavaScript frame for the client.
The third part is ReactJS, a JavaScript library for building user interfaces (UIs) from UI components.
Node.js is the best web server for JavaScript.
NodeJS is the last part of the MERN stack. It is a JS runtime environment that lets JavaScript code run outside a browser.
The middle tier is made up of Express and Node. Node.js is a popular and powerful JavaScript server platform, and Express.js is a server-side web framework. ME(RVA)N is the best way to work with JavaScript and JSON, no matter which version you choose.
Learn more about the parts.
MongoDB
MongoDB is a NoSQL DBMS where data is stored in key-value pairs in documents, similar to JSON objects that store data. Users can make databases, schemas, and tables with MongoDB. It comes with the Mongo shell, which lets you delete, query, and update records using JS.
MongoDB doesn’t have a standard schema like most relational databases, which consists of columns and tables. Data is kept in flexible documents with a query language based on JSON (JavaScript Object Notation). The documents can have different contents, sizes, and numbers of fields. This means that the structure of the data will change as time goes on.
ExpressJS
ExpressJS is a framework for NodeJS that makes writing code for the back end easier. It keeps you from having to do a lot of Node modules. ExpressJS has middleware that helps keep the code clear.
The Express framework is made for making web apps and APIs that work well. It’s known for being fast and having a simple design, with a lot of extra features that can be added as plugins.
ReactJS
ReactJS is a JS library that lets you make user interfaces for mobile and single-page applications (SPAs). It enables you to write JavaScript code and build user interface (UI) components. The JS library does everything with virtual DOM.
With the React library, you can make views that are rendered in HTML. Ideas in React are told what to do. This means that developers don’t have to worry about managing the effects of changes to the data or the view’s state, which is the object that controls how components act.
Instead of using templates to automate the creation of HTML or DOM (Document Object Model) elements used over and over, React uses a full-featured programming language (JavaScript) to build HTML or DOM elements used over and over or that are created based on certain conditions.
NodeJS
NodeJS is a JavaScript runtime environment that is free and open source. It lets users run code on the server. It comes with npm, or the node package manager, allowing users to choose from many node modules or packages. Node runs code faster because it was built on the Chrome JavaScript Engine.
Node.js doesn’t need an HTML page to work. Instead, it uses its module system based on CommonJS to create several JavaScript files.
