Difference Between ReactJS VS ExpressJS

1. ReactJS Introduction

1. React is a open source declarative, efficient, and flexible JavaScript-based UI development library. It is now one of the most commonly used frontend libraries for web development and mobile apps. It is based on component-based front end library responsible only for the view layer or UI of the application.
2. It's founded by Jordan Walke a software engineer at Facebook in 2011 in its newsfeed section. But it's public initial version 0.3.0 of React is released on May 2013.
3. It's latest version of React 18.2.0 released on 14 June 2022.
4. React offers various extensions for entire application architectural support such as Flux and React Native, beyond mere UI.

5. If a developer wants to create a changeable and large web application without reloading it, they often choose React. In fact, React is fast, simple yet very effective to do that. Behind it's biggest features is Virtual DOM.

These are the some companies which are using RactJS.

• Instagram
• Discord
• Walmart
• Wix
• Pinterest
• Skype

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1. Expressjs Introduction

1. Express.js was developed by TJ Holowaychuk. The first release, according to Express.js GitHub repository was on 22 May 2010. Version 0.12
2. ExpressJS as a layer built on the top of the Node.js that helps manage a server and routes.
3. It is a framework for Node.js.
4. It is written using JavaScript.
5. It allows to setup middleware to respond to HTTP Requests
6. It is used for building backend of web application. So it can be used server side application on NodeJS.
7. It support MVC Architecture.
8. It supports JavaScript that is very easy to learn.
9. ExpressJS you have access to several functions that will facilitate and reduce the development time of your web application. So It is a fast, robust and asynchronous in nature.
10. 1895 companies reportedly use ExpressJS in their tech stacks, including Twitter, Accenture, and Stack

ExpressJS Architecture

The below architecture diagram show how expressJS internally work with NodeJS Server.

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Popularity Graph

Reactjs overtook Vuejs to become the most used web framework among software developers worldwide, as of 2022. According to the survey, 18.82 percent of respondents reported to be using Vuejs, while 42.62 percent were using React.js.

Source: Stack Overflow Developers Survey

Difference between the ReactJs & ExpressJS