v0.4.0

Official React changelog summary with source attribution, release tags, and community reactions.

Track this React release note alongside related changelog updates, risky changes, and weekly digest signals from the developer community.

React·13 years ago · Jul 19, 2013, 07:43 PMFixMay break your integrationAI-assisted summary

Summary

Switches to data‑reactid for DOM tracking, adds key prop support, expands supported elements/attributes, and improves prop validation and defaults.
Introduces server‑side rendering API (renderComponentToString), batched updates, and a new synthetic event system with optional setState callback, boosting performance.
Removes React.autoBind (breaking change), adds standardized form element wrappers with defaultValue/onChange fixes, and updates JSX handling (comment nodes and direct children transformation).

featurebreakingbugfixsource healthy

Official source Last checked 2 hours ago

Loading follow options…

official source

Verify the original release note

Every summary should remain traceable to the original changelog or release source.

AI-assisted summarysource healthyLast checked 2 hours ago

related channels

Turn this React release note into a weekly digest for the tools you actually use.