What are some examples of using Suspense in React 18?

What are some examples of using Suspense in React 18?

In React 18, Suspense allows you to handle asynchronous operations more gracefully. For example, you can wrap a component that fetches data with Suspense to show a fallback UI while the data is loading.

Can you show me a code example?

Sure! Here's a simple example:

import React, { Suspense } from 'react';

const DataFetchingComponent = React.lazy(() => import('./DataFetchingComponent'));

function App() {
  return (
    <Suspense fallback={<div>Loading...</div>}>
      <DataFetchingComponent />
    </Suspense>
  );
}

What happens if the data fetching fails?

If the data fetching fails, you can handle errors by using the ErrorBoundary component. You can wrap your Suspense component with an ErrorBoundary to catch any errors that occur during the loading process.

Can you explain how ErrorBoundary works?

Certainly! An ErrorBoundary is a React component that catches JavaScript errors in its child component tree. You can define it by implementing the componentDidCatch lifecycle method and rendering a fallback UI when an error occurs.