Improve Your Application Performance with React Hooks

Improve Your Application Performance with React Hooks

React Hooks are a powerful technique liked by many developers. Why? I'd like to talk about the most common hooks and present some tips about using them to improve app performance.

React Hooks are a powerful technique liked by many developers. Why? There are so many reasons for that. One of them is that this feature extended the use of functional components. I'd like to talk about the most common hooks and present some tips about using them to improve app performance. So, let's get started.

The basics

First off, you should know that hooks are functions. They allow using some React features in function components like state managing or use of lifecycle methods. However, you should keep in mind that they should be called only on the top level, so you can't call a hook inside a conditional statement or loop.

There are only two places where you can call the hook: inside function component or inside another hook. While the first case is rather obvious, the second one is usually related to writing custom hooks which are a good way to share logic between components.

The variety

I feel like I should also make a distinction between the hooks before I start writing about them. So, generally, we can divide them into basic and additional ones. To the first group, we rank:

  • useState
  • useEffect
  • useContext

While in the other set, we have:

  • useCallback
  • useMemo
  • useReducer
  • useRef
  • useImperativeHandle
  • useLayoutEffect
  • useDebugValue

In this article, I intend to focus on the most common ones, so if you're interested in the rest of them, you should read Hooks API Reference. You'll find a description of all React Hooks, good practices and answers for frequently asked questions.

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