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Top-level app component and animated route transitions

Freshabout 19 hours ago
Mar 14, 20260 views
Confidence Score95%
95%

Problem

Having animated route transitions would be nice, as this is one of the many benefits through client-side routing. Doing so should be left up to the user in my opinion (some people prefer CSS transitions over more fine-grained control with `react-motion` etc). As I understand it, one would need to modify the top-level App component. The client entry file seems to look for a globally assigned `__NEXT_DATA__.app` variable but I can't find any documentation on that.

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1 Fix

Canonical Fix
Unverified Fix
New Fix – Awaiting Verification

Implement Animated Route Transitions in Next.js App Component

Medium Risk

The default Next.js App component does not support animated route transitions out of the box. This is due to the way Next.js handles routing and rendering, which requires a custom implementation to manage animations during route changes. Users want the flexibility to choose their animation method, whether through CSS transitions or libraries like `react-motion`.

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  1. 1

    Create a Custom App Component

    Override the default App component in your Next.js application to include animation logic. This will allow you to control how transitions occur between routes.

    javascript
    import { useEffect } from 'react';
import { useRouter } from 'next/router';
import '../styles/globals.css';

function MyApp({ Component, pageProps }) {
  const router = useRouter();

  useEffect(() => {
    const handleRouteChange = () => {
      // Add your animation logic here
    };
    router.events.on('routeChangeStart', handleRouteChange);
    return () => {
      router.events.off('routeChangeStart', handleRouteChange);
    };
  }, [router]);

  return <Component {...pageProps} />;
}

export default MyApp;
  2. 2

    Add CSS for Transitions

    Define CSS classes for the animations you want to apply during route transitions. This can be done in your global CSS file or a specific module CSS file.

    css
    .fade-enter {
  opacity: 0;
}
.fade-enter-active {
  opacity: 1;
  transition: opacity 300ms;
}
.fade-exit {
  opacity: 1;
}
.fade-exit-active {
  opacity: 0;
  transition: opacity 300ms;
}
  3. 3

    Integrate Animation Logic in Route Change

    In the route change handler, add logic to apply the CSS classes for the animations. This will ensure that the animations are triggered correctly during route transitions.

    javascript
    const handleRouteChange = (url) => {
  const content = document.querySelector('#__next');
  content.classList.add('fade-exit');
  setTimeout(() => {
    content.classList.remove('fade-exit');
    content.classList.add('fade-enter');
  }, 300);
};
  4. 4

    Test the Animation

    Run your Next.js application and navigate between routes to observe the animations. Ensure that the transitions are smooth and that there are no console errors related to routing.

Validation

To confirm the fix worked, navigate between different pages in your application and observe the animated transitions. Check the browser console for any errors related to routing or animations. The transitions should occur smoothly without any flickering or delays.

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Environment

Submitted by

AC

Alex Chen

2450 rep

Tags

nextjsreactssr