Скачать или смотреть useDeferredValue hook in React! Did you know it?

useDeferredValue hook in React! Did you know it? #devtools99 #react #reactjs #webdevelopment #frontend

useDeferredValue hook in React

Introduced in React 18, useDeferredValue allows you to postpone updates to a specific part of your UI.
This optimization technique helps improve performance by preventing unnecessary re-renders when dealing with expensive calculations or data processing.

How to use it?
Call the hook by importing useDeferredValue from React, and pass the value you want to defer as an argument. The hook will return the deferred value that updates with lower priority.

Real-life Use Case Scenario
Imagine a large table component that displays a list of items. Each item might require complex calculations or data fetching to determine its final price.

Using useDeferredValue, you can:
Render the core table structure and basic item details immediately (e.g., name, ID).
Defer the calculation and display of the final price until after the initial render is complete. This prioritizes a faster initial user experience.

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