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React Key Concepts

You're reading from  React Key Concepts

Product type Book
Published in Dec 2022
Publisher Packt
ISBN-13 9781803234502
Pages 590 pages
Edition 1st Edition
Languages
Author (1):
Maximilian Schwarzmüller Maximilian Schwarzmüller
Profile icon Maximilian Schwarzmüller

Table of Contents (16) Chapters

Preface
1. React – What and Why 2. Understanding React Components and JSX 3. Components and Props 4. Working with Events and State 5. Rendering Lists and Conditional Content 6. Styling React Apps 7. Portals and Refs 8. Handling Side Effects 9. Behind the Scenes of React and Optimization Opportunities 10. Working with Complex State 11. Building Custom React Hooks 12. Multipage Apps with React Router 13. Managing Data with React Router 14. Next Steps and Further Resources Appendix

Loading Data with React Router

With React Router, the example from the previous chapter can be simplified down to this code snippet:

import { useLoaderData } from 'react-router-dom';
function Posts() {
  const loadedPosts = useLoaderData();
  return (
    <main>
      <h1>Your Posts</h1>
      <ul className="posts">
        {loadedPosts.map((post) => (
          <li key={post.id}>{post.title}</li>
        ))}
      </ul>
    </main>
  );
}
export default Posts;
export async function loader() {
  const response = await fetch('https://jsonplaceholder.typicode.com/posts');
  if (!response.ok) {
    throw new Error('Could not fetch posts');
  }
  return response;
}

Believe it or not, it really is that much less code than in the previous example. Though, to be fair, the content that should be displayed in case of an error is missing here. It's in a separate file (which will be shown later...

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