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Built-in React Hooks

5 Units25 Lessons
Unit 1

State Hooks

Real-World Project: Building a Counter Application
Introduction to useState Hook
Basic Usage of useState
Updating State with useState
Handling Complex State with useState
Unit 2

Effect Hooks

Introduction to useEffect Hook
Managing Dependencies in useEffect
Fetching Data with useEffect
Running Effects on Component Updates
Real-World Project: Creating a Timer Application
Unit 3

Ref Hooks

Basics of useRef Hook
Using useRef for DOM Access
Persisting Values with useRef
Forwarding Refs in React
Real-World Project: Implementing Focus Management
Unit 4

Context Hooks

Creating Context Providers
Consuming Context in Nested Components
Real-World Project: Building a Theme Switcher
Using useContext Hook
Understanding React Context
Unit 5

Performance Hooks

Using useCallback for Function Memoization
Preventing Unnecessary Re-renders
Introduction to useMemo Hook
Real-World Project: Optimizing a List Rendering Component
Memoizing Expensive Calculations
Unit 4•Chapter 5

Understanding React Context

Summary

The video covers using React's Context API, focusing on the useContext hook. It begins with creating a context using React.createContext for managing a theme, such as toggling between dark and light modes. In the App component, state is set up with useState to handle the theme toggle. A function switches the theme, and this is demonstrated in both function-based and class-based components. The context provider wraps components to provide access to the context values. It also touches on best practices for handling context in applications.

Concept Check

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In the transcript, what's the state for?

What React function creates a context object?

How do class components consume context?

What wraps components to provide context value?

What's key difference in context for functions vs classes?

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