I used to teach a class on React. There’s no better way to start a hands-on course than “Let’s write a simple component!”. But time after time I hear — “Vladimir, what’s a component, anyways?”. Bah, what a question! It’s a react thingie. React apps are made of components. Why do you care at all? When you grow up you’ll see. But at some point in life you just have to find the definitive answer to this question, and for me this time is now.
