Key takeaways:
- React 19 focuses on reducing the amount of code to write and improving app performance.
- React Compiler converts React code into regular JavaScript, optimizing performance and removing the need for manual memoization tools.
- Directives allow developers to specify where components run on the client or server.
- Actions simplify form handling by executing functions when a form is submitted.
- Use Optimistic Hook enhances user experience by performing optimistic updates in real-time apps.
# React 19 Overview
- React 19 introduces several changes to streamline coding and improve performance.
- The React Compiler converts React code into regular JavaScript, optimizing performance and removing the need for manual memoization tools like , , and .
# Directives
- Directives are strings that specify where React components run on the client () or server ().
# Actions
- Actions are functions called when a form is submitted, connected to the prop of any form element.
- Asynchronous actions require the hook to prevent multiple form submissions before the first one finishes.
# Use Optimistic Hook
- The hook performs optimistic updates in real-time apps, enhancing user experience.
- It temporarily updates the user interface while waiting for the server's response.
For a complete guide and cheat sheet on React 19, visit react boot camp.
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