seniorReact
What is React flushSync?
Updated Apr 23, 2026
Short answer
flushSync forces React to process updates synchronously.
Deep explanation
Normally React batches updates asynchronously. flushSync overrides this behavior, ensuring immediate DOM updates. It should be used sparingly.
Unlock with a Pro subscription to view this section.
View pricingReal-world example
No real-world example available yet.
Unlock with a Pro subscription to view this section.
Upgrade to ProCommon mistakes
No common mistakes listed yet.
Unlock with a Pro subscription to view this section.
Upgrade to ProFollow-up questions
No follow-up questions available yet.
Unlock with a Pro subscription to view this section.
Upgrade to Pro