Is react JS only frontend?

Not all of them are good. React is one of the most popular and widely used libraries (it’s not a framework) for frontend development. To give you a gentle introduction, React is an open-source JavaScript library used for frontend development , which was developed by Facebook.

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What is back end framework?

A backend or server-side framework is the library of tools and modules that helps in building the architecture of a website . It significantly impacts a web app’s performance and can decide your project’s success. Backend frameworks mainly help make tasks convenient and easy for developers.

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