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Quick Start

• How to create and nest components
• How to add markup and styles
• How to display data
• How to render conditions and lists
• How to respond to events and update the screen
• How to share data between components

new features interested

• Fiber is Always There:

  React’s Fiber architecture is the engine behind rendering improvements—it’s not something you “turn on” separately.

• Concurrent Mode and Suspense Are Opt-In:

  These features are built on Fiber and need to be enabled or used explicitly. They simplify handling asynchronous operations by allowing React to wait (suspend) rendering until data is ready, and they let you mark updates with different priorities.

• Transition from Manual to Declarative Loading:

  Before these features, you managed loading states and errors manually. With Suspense, you delegate that responsibility to a boundary that automatically displays fallback UI, making your code cleaner and more robust.