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Built-in React Hooks
5 Units
25 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 1
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Chapter 2
Introduction to useState Hook
Summary
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What does the useState hook return in React?
An array with state and setter
An object with state properties
A single state value
An array with state and setter
How should hooks be called in functional components?
At the top level only
Inside conditions or loops
At the top level only
In any function
What is the role of the setter function from useState?
Updates the state value
Updates the state value
Renders the component
Fetches data
Why import useState from React?
To handle events
For class components only
To use state in functional components
To use state in functional components
What happens if hooks are used conditionally?
React throws an error
React throws an error
Nothing unusual occurs
State updates incorrectly
5 questions remaining
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Real-World Project: Building a Counter Application
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Basic Usage of useState