In addition to reusable library code (which saves development time and cuts down on the chance for coding errors), React comes with two key features JavaScript devs love – virtual DOM and JSX.

We’re going to review them later on.

Facebook used React over Angular in production for years, along with Instagram, Netflix, and other tech giants. But it works for small projects too.

Here are some of the small ones to give you an idea:

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As well as Angular, React is an open-source project. This means anyone can download and modify it's source for free. React libraries range from collections of individual UI features to complete React.js templates that help build UI's from the ground up.

So, no matter what specific UI function a developer is going to address with React, there's a library for their needs.