Lazy loading is a technique in web development that delays the loading of certain elements on a page until they are needed. This can significantly improve the initial loading time of a web page and provide a better user experience. In ReactJS, lazy loading can be achieved through the use of the "lazy" function from the "react" package.
Why Lazy Loading is Important
In today's fast-paced world, users expect websites to load quickly. If a website takes too long to load, users are likely to leave and never come back. Lazy loading can help to reduce the initial loading time of a web page by only loading the elements that are necessary for the user to see. This can result in a faster, more responsive website and a better user experience.
How to Implement Lazy Loading in ReactJS
Implementing lazy loading in ReactJS is a simple process. The "lazy" function is used to delay the loading of a component until it is needed. The "lazy" function takes a function as an argument that returns the component to be loaded.
Here is an example of lazy loading in ReactJS:
import React, { lazy, Suspense } from 'react';
const MyComponent = lazy(() => import('./MyComponent'));
function App() {
return (
<div>
<Suspense fallback={<div>Loading...</div>}>
<MyComponent />
</Suspense>
</div>
);
}
export default App;
In this example, the "MyComponent" component is loaded lazily using the "lazy" function. The "Suspense" component is used to provide a fallback UI while the component is loading.
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