CourseGenix

Explore

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 3•Chapter 1

Basics of useRef Hook

Summary

The video discusses the useRef hook in React, emphasizing its flexibility and common pitfalls. It uses a simple React app with state for a name and an input to update it. The speaker explains how developers often misuse useRef by attempting to track component renders with useState, which leads to infinite re-renders due to state updates triggering more renders. Instead, useRef is recommended for scenarios like counting renders because it persists values without causing re-renders, helping avoid performance issues and errors in React applications.

Concept Check

0/5

Why does using useState for render counting cause issues?

How does useRef differ from useState in handling values?

What is a key advantage of useRef over useState?

In the transcript, why is useRef considered flexible?

What mistake is highlighted with useEffect and useState?

NextUsing useRef for DOM Access