How can I use React Suspense for data fetching?

How can I use React Suspense for data fetching?

React Suspense allows you to defer rendering part of your component tree until some condition is met, like data fetching. You can use it with a data fetching library like React Query or by creating your own resource.

Can you show me a simple example?

Sure! Here's a basic example:

const resource = createResource(fetchData);

function MyComponent() {
  const data = resource.read(); // This will suspend if data is not ready
  return <div>{data}</div>;
}

In this example, createResource is a function that handles the fetching logic.

What happens if the data takes too long to load?

If the data takes too long, React will suspend the component and show a fallback UI, which you can define using the Suspense component.

How do I handle errors in Suspense?

You can use the ErrorBoundary component to catch errors in your Suspense tree. Wrap your components in an ErrorBoundary to handle any errors that occur during data fetching.