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What is React.StrictMode?

React.StrictMode is a development-only feature that helps identify potential problems in an application. It highlights unsafe lifecycle methods, detects unexpected side effects, warns about deprecated APIs, and helps prepare applications for future React features. StrictMode does not affect production builds and is primarily used for debugging and code quality improvements.

Related Drills

What is the Virtual DOM and how does React use it to render pages?

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Explain the difference between useEffect hooks and useLayoutEffect hooks.

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What is the Virtual DOM in React?

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JB

Jeevan Bhargav

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This answer is calibrated for technical interviews. Verify benchmarks in local sandboxes before deploying.