AI Briefing5 Scroll Restoration Scenarios and Practical Code Tips for Frontend Developers
Key point
This covers scenario-specific strategies for solving scroll restoration issues caused by data loading and dynamic content changes in SPA environments.
Details
In SPA (Single Page Application) environments, the browser's default scroll restoration feature may not work properly, degrading the user experience. This occurs because JavaScript dynamically changes content, causing the browser to fail to recognize page changes, or because page height changes due to asynchronous data loading.
Solution strategies according to the situation are as follows.
- Static data: Use the History API to save the
scrollYvalue and restore it at the point of thepopstateevent. - Dynamic data: Use a relative reference point instead of an absolute position. Save the item ID visible on screen along with the scroll position in
sessionStorage, then performscrollIntoViewto that item after data loading is complete. - Lazy loading/infinite scroll: Secure layout space in advance with a skeleton UI, and pre-load the necessary data in batches up to the saved point to reproduce the scroll position.
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