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React components are modular and composable. And Unit tests exist to tests software modules. Hence it makes React components a perfect candidate for Unit tests.

So these days I am mentoring my team on React. As an exercise I asked them to write a rating widget. And I was blown seeing the different approaches they took. Almost each implementation was different.

It's hard to imagine a conversation about React that would not involve terms like Virtual DOM, JSX aka inline HTML, and Server side rendering. I've seen people use these terms to differentiate React apart from other JS libraries or frameworks. But after using React for almost a year now, I can say with

React JS is a powerful yet simple library. But when I talk to the guys just getting started with React, I often feel that they have many misconceptions and confusions about it. I don't blame them– React brings many radical new ideas with it.