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