Using the useReducer hook to manage complex states
The useReducer hook is useful for managing complex states that involve multiple sub-values or when the next state depends on the previous one. It's similar to useState, but more suitable when the state is complex.
Synopsis
The useReducer hook is an alternative to useState when you have more complex states. It allows you to manage states that can change in various ways by using a reducer and an action.
Purpose
The useReducer hook facilitates the management of complex states in functional components, especially when the state depends on multiple values or when a more precise change is required.
- Allows managing complex states that involve multiple sub-values.
- Offers a clear and predictable way to handle state transitions through actions and reducers.
- Is useful when the state depends on the previous state to determine the new value.
- Is used in combination with dispatch to trigger actions and change the state.
Exercises
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How does useReducer work? What is a hook and what is it for? Why use useReducer instead of useState? Which hook is specifically used to perform side effects in functional components?