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Web Development in React
Unit 1
Introduction to React
Understanding React and Its Importance
Setting Up the Development Environment
Unit 2
React Basics
JSX Deep Dive
Components and Props
State and Lifecycle
Unit 3
Advanced React Techniques
Handling Events in React
Conditional Rendering
Lists and Keys
Unit 4
State Management
Using Context API
Redux Essentials
Unit 5
Connecting to Back-End
Fetching Data with Axios
Using Firebase in React
Unit 6
Testing and Deployment
Unit Testing in React
Deployment Best Practices
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Unit 2 • Chapter 3
State and Lifecycle
Summary
Concept Check
What triggers re-render in component lifecycle?
Logging events
CSS change
Network update
State change
Which method is called after a component updates?
componentDidUpdate
componentWillUpdate
shouldComponentUpdate
componentDidMount
Where is state typically initialized in React?
componentDidMount
Constructor method
Render method
componentDidLoad
Which lifecycle method is essential for cleanup?
componentWillUnmount
componentDidMount
shouldComponentUpdate
componentDidUpdate
What does setState do in a class component?
Sends a network request
Destroys component
Updates the component state
Downloads data
Check Answer
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Components and Props