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The Interactive Guide to Rendering in React

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React, in its purest form, is a library for building user interfaces. It's so simple that the entire mental model can be represented as a formula, v = f(s) – where your view is simply a function of your state. Though this equation gives us a simple mental model for how React works, there's one aspect of the equation that still, after all these years, seems to confuse people. Exactly when and how is f invoked? Or said differently, exactly when and how does React update the view? Many blog posts, conference talks, and tweet threads have been dedicated to this seemingly simple topic. And yet, for some reason, it's still a topic that even experienced React developers have some (often unknown) misconceptions about. The interactive way to master modern React Ready to master modern React? Check out react.gg – our brand new, interactive course that's helped thousands of professional React developers level up their skills. To better answer this, instead of starting with how or when, let's go b

The Interactive Guide to Rendering in React The Interactive Guide to Rendering in React React, in its purest form, is a library for building user interfaces. It's so simple that the entire mental model can be represented as a formula, v = f(s) – where your view is simply a function of your state. Though this equation gives us a simple mental model for how React works, there's one aspect of the equation that still, after all these years, seems to confuse people. Exactly when and how is f invoked? Or said differently, exactly when and how does React update the view? Many blog posts, conference t

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