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useReducer is a React Hook that lets you add a reducer to your component. const [state, dispatch] = useReducer(reducer, initialArg, init?) Reference. useReducer(reducer, initialArg, init?) dispatch function. Usage. Adding a reducer to a component. Writing the reducer function. Avoiding recreating the initial state. Troubleshooting.
What is the useReducer hook? You can think of useReducer as a “state” hook, like useState. It’s a hook that allows you to manage the state of your component. The way the hook works is quite different from useState though. TIP: If you’d like a refresher of what the useState hook does and how it works, check out this article on it!
Jan 30, 2023 · How the useReducer Hook Works. You can add a reducer to your component using the useReducer hook. Import the useReducer method from the library like this: import { useReducer } from 'react'. The useReducer method gives you a state variable and a dispatch method to make state changes.
The useReducer Hook is similar to the useState Hook. It allows for custom state logic. If you find yourself keeping track of multiple pieces of state that rely on complex logic, useReducer may be useful.
Aug 3, 2021 · useReducer is a React hook that provides an alternative approach to managing state in components compared to useState. While useState is easy and suitable for managing simple state updates, useReducer and is particularly helpful for managing more complex state logic.
May 3, 2024 · A useReducer is a hook in React that allows you add a reducer to your component. It takes in the reducer function and an initialState as arguments. The useReducer also returns an array of the current state and a dispatch function.
Jun 28, 2023 · useReducer is one of the additional Hooks that shipped with React v16.8. An alternative to the useState Hook, useReducer helps you manage complex state logic in React applications. When combined with other Hooks like useContext, useReducer can be a good alternative to Redux, Recoil, or MobX.
