Prevent Route Changes and Unsaved Data Loss in Next.js

Warn users about unsaved changes before leaving the web page in Next.js

Robert S (codeBelt)
Better Programming
Published in
5 min readFeb 7, 2023

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Image by gpointstudio on Freepik

In web development, it is often necessary to prevent users from unintentionally leaving a page before saving changes made on the page. Developers commonly utilize the window.onbeforeunload event, a browser feature that triggers a confirmation dialog…

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