Answer
React skips renders when the new state value is strictly equal to the previous state, avoiding unnecessary updates.
Quick Answer
React may bail out of a re-render if the state setter is called with the same value as the current state (Object.is comparison). React detects the value didn't change, skips rendering the component, and doesn't update children. This is automatic — you don't need to manually compare.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ