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10 items
ReactJS Quiz
Test your knowledge of ReactJS, frontend development, and JavaScript with this quiz!
What is the difference between React and Angular?
React is a library, Angular is a framework
They are the same
They are both frameworks
Angular is a library, React is a framework
What is the difference between props and state in React?
They are the same
They are both mutable
Props are read-only, state is mutable
State is read-only, props are mutable
What is the purpose of the render() method in React?
To handle user input
To define the component's lifecycle
To render the component's UI
To update the component's state
What is a React component?
A function that returns HTML
A class that extends React.Component
A class that extends Component
A function that returns JSX
What is the difference between React Native and ReactJS?
They are the same
React Native is for mobile development, ReactJS is for web development
ReactJS is for mobile development, React Native is for web development
React Native is a newer version of ReactJS
What is a state in React?
A React lifecycle method
A JavaScript object that stores component data
A built-in React component
A React component that handles user input
What is the purpose of the componentDidMount() method in React?
To update the component's state
To render the component
To perform actions after the component is mounted
To define the component's props
What is JSX?
JavaScript eXtension
JavaScript Extension
JavaScript XML
JavaScript Syntax
What is the virtual DOM in React?
A mechanism for optimizing DOM updates
A separate DOM tree for tracking changes
A lightweight copy of the actual DOM
A representation of the actual DOM
What is the purpose of the componentWillUnmount() method in React?
B. To initialize the component before mounting
A. To perform cleanup before the component is unmounted
C. To update the component's state after mounting
D. To render the component to the DOM
Finish Attempt
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