Simplfy react app with react hooks download

Make Dynamic Forms with React. Controlling Form Values with React. Use the key prop when Rendering a List with React. Lifting and colocating React State. Install and use React DevTools. A Beginners Guide to React Outro. You might also like these resources:. Develop Accessible Web Apps with React. Students 0. Login with your site account Lost your password? Remember Me Not a member yet? Register a new account Want to become an instructor? Modal title. No Yes. If you would like a more comprehensive useSetState hook, give use-legacy-state a try.

Our hook to track the previous values looks pretty useful, so let's extract that into it's own custom React Hook called usePrevious. It would be nice if useEffect did the deep value comparison for us. Why don't we make our own custom hook that does that for us? In this lesson we'll create a useDeepCompareEffect which will allow us to use it just like a useEffect and allow us to just pass the inputs.

We've got a pretty simple User class component that manages a bit of state and uses some context. Let's refactor this over to a function component that uses the useContext and useState hooks. But because it doesn't render anything, we can actually just change it to a custom hook. Let's create a useQuery hook that returns the state from the hooks the Query component uses and use that instead.

But we'll preserve the component so we don't have to refactor everywhere that uses the Query render prop based component as well and we can keep our tests passing as they are. Let's refactor our GitHubClientProvider class component to a function component that uses hooks. This one's pretty interesting because we can use useEffect to encapsulate everything we need for a single effect, truly separating that concern within our component.

With React Let's refactor our lazily-loaded components that are using react-loadable to components that use the built-in React. While users are filling out the form on our home page, it would be a good idea to pre-load the next page they will be going to so they don't have to wait for it to load once they've finished filling out the form.

React's useEffect hook makes this really easy. Kent C. We realize that our useEffect -- which we are using to simulate the same componentDidUpdate, componentDidMount, componentWillUnmount -- it behaves slightly differently.

That is going to break our tests. We'll see how we can fix that. You're using them all over the codebase, and you may not be able to have time to refactor all of your codebase to use the new hook that you created.

I'm excited about showing you how we can accomplish that using React suspense and React. I think you're going to love it. I think you're especially going to appreciate the practical application of this. We're going to see some edge cases and some weird situations, which you'll probably bump into as you're applying these features to your own codebase. I am pretty confident that you're going to love it and you're going to learn a lot.

I hope you enjoy the course. This course is not intended to sell you on the "why" behind hooks, but the "how.