Hooks Overview

Hooks are a fundamental feature of React applications, allowing you to execute JavaScript code at specific points in your component lifecycle. This document provides an overview of hooks, their types, and how to use them effectively.

Types of Hooks

• State Hooks: useState
• Effect Hooks: useEffect
• Context Hooks: useContext
• Other Hooks: useReducer, useCallback, useMemo, useRef, useImperativeHandle, useLayoutEffect, useDebugValue

useState Hook

The useState hook allows you to add React state to function components. It returns an array with two elements:

• The current state value.
• A function that lets you update the state.

const [count, setCount] = useState(0);

useEffect Hook

The useEffect hook lets you perform side effects in function components. It takes two arguments:

• A function that contains the code to be executed.
• A dependency array that determines when to run the effect.

useEffect(() => {
  // Code to be executed after every render
}, [dependency]);

useContext Hook

The useContext hook lets you subscribe to context updates and read the current context value.

const value = useContext(MyContext);

Learn More

For more information on hooks, you can visit the official React documentation.

React Hooks

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