React Hooks Cheat Sheet

React Hooks is a new feature introduced in React 16.8 that allows developers to use state and other React features without writing a class. It is a way to reuse stateful logic between components, making it easier to manage complex applications.

Hooks are functions that allow you to use state and other React features in functional components. They are designed to solve common problems in React, such as managing state, handling side effects, and reusing logic between components.

The most commonly used hooks are useState, useEffect, useContext, and useReducer. useState allows you to add state to functional components, useEffect allows you to handle side effects, useContext allows you to access context in functional components, and useReducer allows you to manage complex state changes.

This cheat sheet provides a quick reference for React Hooks. It is divided into different tables based on the theme. Enjoy!

Table of Contents

• State Hooks
• Effect Hooks
• Context Hooks
• Ref Hooks
• Reducer Hooks
• Callback Hooks
• Memoization Hooks
• Custom Hooks

State Hooks

Hook	Description
useState	Returns a stateful value and a function to update it.
useReducer	Returns a stateful value and a dispatch function to update it using a reducer function.

Effect Hooks

Hook	Description
useEffect	Runs a side effect after rendering.
useLayoutEffect	Runs a side effect after rendering but before painting.
useMemo	Memoizes a value to avoid unnecessary computations.
useCallback	Memoizes a function to avoid unnecessary re-renders.

Context Hooks

Hook	Description
useContext	Returns the current value of a context.
createContext	Creates a new context.

Ref Hooks

Hook	Description
useRef	Returns a mutable ref object.

Reducer Hooks

Hook	Description
useReducer	Returns a stateful value and a dispatch function to update it using a reducer function.

Callback Hooks

Hook	Description
useCallback	Memoizes a function to avoid unnecessary re-renders.

Memoization Hooks

Hook	Description
useMemo	Memoizes a value to avoid unnecessary computations.

Custom Hooks

Hook	Description
useCustomHook	A custom hook that encapsulates reusable logic.

Reference

• React Hooks Documentation