How do I implement lazy loading in my web application?

How do I implement lazy loading in my web application?

Lazy loading is a design pattern that postpones loading non-essential resources at the point of page load. Would you like to know how to implement it in a specific framework?

Yes, I'm using React. How can I do that?

In React, you can use the React.lazy function to dynamically import components. Wrap your component in React.lazy and use Suspense to handle loading states.

Can you show me a code example?

Sure! Here's a simple example:

import React, { Suspense } from 'react';
const LazyComponent = React.lazy(() => import('./LazyComponent'));

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

What about lazy loading images?

For images, you can use the loading='lazy' attribute in the <img> tag, or use libraries like react-lazyload for more control.