What is new in React 19 that a developer should know?

React 19 and architecture · Freshers and experienced

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Highlights include Actions for forms and async transitions, new hooks (useActionState, useOptimistic, and the use API for reading promises and context), ref as a regular prop, built-in support for rendering document metadata like title and meta tags, and improvements to Suspense and error reporting.

Details can change between minor versions, so confirm in the official React blog and docs.

Learn this topic

React 19 New Features: Actions, useActionState, useOptimistic, use and More in the course React.js Full Course: Beginner to Advanced.

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