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Props & State
easyComplete guide with examples and interview questions · 30 min
Definition
Say it out loud in an interview — clear, simple, no textbook wording.
Props are read-only inputs from parents; state is internal data a component owns and updates with setState or hooks.
In React interviews, start with a one-sentence definition, then show a minimal component. Senior rounds go deeper on re-renders, hooks rules, and performance trade-offs.
Quick Stats
30
Minutes
easy
Difficulty
4
Interview Q's
Key takeaways
- •Props are read-only inputs from parents; state is internal data a component owns and updates with setState or hooks
- •Know one interview-ready example
- •State common pitfalls senior interviewers probe
- •Connect Props & State to real component design trade-offs
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