react
React hydration mismatch
Hydration failed because the initial UI does not match what was rendered on the server
Fixes
- 1.Ensure server and client render identical HTML — avoid Date.now(), Math.random() in initial render
- 2.Use useEffect for browser-only content (window, localStorage) so it only runs on client
- 3.Wrap browser-only components in a client check: `const [mounted, setMounted] = useState(false)`
ssrhydrationnextjs
Related Errors
react3 fixes
React hydration mismatch
Hydration failed because.*server rendered HTML.*didn't match
- •Ensure server and client render same content
- •Use suppressHydrationWarning for dynamic content
react3 fixes
Text content hydration mismatch
Text content does not match server-rendered HTML
- •Don't use Date.now() or Math.random() in render
- •Use useEffect for client-only values
react3 fixes
use client directive error in Server Component
(useClient|use client).*server component
- •Add 'use client' at top of file
- •Move useState/useEffect to client component