The useLayoutEffect Hook
In this React video, I'll show you how the useLayoutEffect hook works, its differences from useEffect, and its main use cases.
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This hook is one of the most surprising due to its similarity to the useEffect hook. According to the React documentation, the useLayoutEffect hook has an identical signature to useEffect, but it fires synchronously after all DOM mutations. In this video, you'll find the meaning of this phrase:
[00:00] Introduction
[00:51] The useLayoutEffect hook
[02:40] Comparing useEffect and useLayoutEffect
[05:00] Order of effects
[06:50] useLayoutEffect example
[09:50] Another useLayoutEffect example
[14:00] useLayoutEffect and React Native
In short, the useLayoutEffect hook is perfect for rendering the component before sending mutations to the browser's DOM. For all other cases, the useEffect hook provides everything we need.
💛 I hope you enjoy it!
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