Difference between Reactjs and Nextjs

What is a web app

To build a modern web app, you need at least these three things

Library vs. framework

Libraries and frameworks are code that someone else wrote to help you solve common problems while writing your application.

Libraries

Libraries are to solve a specific problem in your app. For example:

Some popular JavaScript libraries:

Frameworks

It can be everything you use to develop your web app. Typically is a collection of libraries that work together in some opinionated way to help you build a fully functioning app.

Some popular JavaScript frameworks

Reactjs vs. Nextjs

React is a JavaScript library that helps you to build user interfaces using components as building blocks.

Reactjs do one part of all the web app, which is to build UI components to show content.

NextJS is a framework with a set of libraries that work together to build a web app, and one of those libraries is Reactjs.

Other libraries used by Nextjs are:

Conclusion

Nextjs as a framework allows you to use React library to build pages and UI for your web app.

Reactjs as a library is part of a framework, the UI components part.

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