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Web Development Questions - React.js

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Which attribute is used to set CSS classes in JSX?
Web Development React.js Objective
Posted: Aug 16, 2025 View Details
What is the purpose of useEffect hook?
Web Development React.js Objective
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Which method is used to prevent default form submission?
Web Development React.js Objective
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What is the correct way to export a React component?
Web Development React.js Objective
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What is the difference between state and props?
Web Development React.js Objective
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Which lifecycle method is called before component unmounts?
Web Development React.js Objective
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What is the purpose of React.memo()?
Web Development React.js Objective
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Which hook is used to optimize expensive calculations?
Web Development React.js Objective
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What is the purpose of useCallback hook?
Web Development React.js Objective
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What is Context API used for?
Web Development React.js Objective
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Which method is used to create a Context?
Web Development React.js Objective
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What is the purpose of useReducer hook?
Web Development React.js Objective
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What is prop drilling?
Web Development React.js Objective
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Which lifecycle method is called when props or state change?
Web Development React.js Objective
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What is the purpose of shouldComponentUpdate?
Web Development React.js Objective
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