The main problem related to React Router v6 lazy suspense is that it is not yet fully supported by all browsers. This means that users may experience issues when trying to access certain pages or features on websites using React Router v6 lazy suspense. Additionally, there are still some bugs and performance issues that need to be addressed before it can be used in production environments. Finally, the API for lazy loading components with Suspense is still in its early stages and may require additional development time to ensure compatibility with existing applications.
import React, { Suspense } from 'react';
import { BrowserRouter as Router, Route, Switch } from 'react-router-dom';
const Home = React.lazy(() => import('./Home'));
const About = React.lazy(() => import('./About'));
const Contact = React.lazy(() => import('./Contact'));
function AppRouter() {
return (
<Router>
<Suspense fallback={<div>Loading...</div>}>
<Switch>
<Route exact path="/" component={Home} />
<Route path="/about" component={About} />
<Route path="/contact" component={Contact} />
</Switch>
</Suspense>
</Router>
);
}
export default AppRouter;
1. This code imports the React library, as well as the Suspense component from React, and the BrowserRouter, Route, and Switch components from react-router-dom.
2. It then defines three components (Home, About, Contact) using React’s lazy loading feature to import them from their respective files.
3. The AppRouter function is defined which returns a Router component containing a Suspense component with a Switch component inside of it.
4. Inside of the Switch component are three Route components which each render one of the imported components when their respective paths are matched in the URL (e.g., ‘/’ for Home).
5. Finally, AppRouter is exported so that it can be used elsewhere in the application.
How do you use lazy loading in react router v6
v6
Lazy loading is a technique used to defer the loading of certain components until they are needed. In React Router v6, lazy loading can be achieved by using the dynamic import() syntax. This syntax allows you to split your code into multiple bundles which can then be loaded on demand or in parallel. This helps reduce the initial bundle size and improve performance. To use lazy loading with React Router v6, you must wrap the component that you want to lazy load in a dynamic import() call. The import() call will return a promise which will resolve when the component has been loaded and is ready to be rendered.
What is suspense and lazy in react
Suspense in React Router is a way to delay the loading of a route until some condition is met. This can be used to improve the performance of an application by only loading routes when they are needed. For example, if a user is navigating to a page that requires authentication, the route can be delayed until authentication has been completed.
Lazy loading in React Router allows for components to be loaded asynchronously when they are needed instead of being loaded all at once. This improves performance by only loading components when they are required and reduces the amount of data that needs to be transferred over the network. Lazy loading also helps with code splitting, allowing for larger applications to be broken down into smaller chunks that can be loaded on demand.
