Interview Q&A / React
React interview questions
Rendering, state, hooks, keys and effects, explained with small examples.
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- What does it mean for a React component to be pure?
A pure component returns the same JSX for the same props, state and context, and changes nothing outside itself while rendering. Purity lets React re-run, skip or repeat renders safely, including in Strict Mode.
IntermediateQuick answer1 min read