scroll penetration

Tencent IMWeb Frontend Team

Jan 4, 2019 · Frontend Development

How to Stop Scroll‑Penetration in Mobile Web Overlays

This article explains why scroll‑penetration occurs when a modal mask covers the page, why simple overflow:hidden or event‑bubbling tricks fail, and provides a complete solution using passive event listeners, selective default‑preventing, multi‑layer handling, and a ready‑to‑use React component.