{CodeRoyale}
All challenges
Multiple ChoiceHard 30s

Hydration Mismatch

A React hydration mismatch occurs when:
Options
  1. 1A component never mounts, because React drops the whole tree
  2. 2An API is unreachable, so the page renders a network error
  3. 3CSS fails to load, so the page renders unstyled but correct HTML
  4. 4Server-rendered HTML differs from the first client render
fullstackmcqhard

Think you can answer under pressure?

Get matched and answer live questions in 3-minute 1v1 battles. Elo ranking, badge tiers and bragging rights on the line.

Play this in a 3-minute battle