MERN basic overview

MERN  is a collection of technologies that enables faster application development. It is used by developers worldwide. The main purpose of using MERN stack is to develop apps using  JavaScript  only. This is because the four technologies that make up the technology stack are all JS-based. Thus, if one knows JavaScript (on json), the backend, frontend, and database can be operated easily.


what is React.js

client side (browser) library which allows you for a highly reactive user interface

render UI with dynamic data

handle user input

communicate with the backend service

provide mobile-app like experience


what is Node.js

execute JS outside the browser.

listen and request send a response

excecute server-side logic

interact with databases and files


what is express.js

based on the node same functionality

middleware based funnel requests through functions

include routing view rendering and more


what is MongoDB

NoSQL database which state Document in a collection insted of recorded in tables as in SQL

store application data

enforce no data schema and relations

easily connected to node/express.




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