useReducer hook and useCallback hook explained in simple example ReactJS tutorial

Опубликовано: 13 Март 2026
на канале: ReactJS tutorials
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Want to learn and master ReactJS? These are the key books that helped me to master this JS library:
React Key Concepts: Consolidate your knowledge of React’s core features by Maximilian Schwarzmüller https://amzn.to/3ZwqtYa
The Road to React: Your journey to master plain yet pragmatic React.js by Robin Wieruch https://amzn.to/3KPimSo
React Application Architecture for Production: Learn best practices and expert tips to deliver enterprise-ready React web apps by Alan Alickovic https://amzn.to/3kLXjp5
Beginning ReactJS Foundations Building User Interfaces with ReactJS: An Approachable Guide 1st Edition by Chris Minnick https://amzn.to/3J7hKWY

useReducer is a built-in React hook that allows managing state in a more complex and predictable way than useState. It's particularly useful when the state has complex transitions, such as in a form or an application that needs to manage multiple variables.
The useCallback hook in React is used to memoize a function so that it's only re-created if one of its dependencies changes.