This guide explains how to detect when a user leaves a web page using modern APIs like Page Visibility, beforeunload/unload, sendBeacon, and pagehide, compares their advantages and drawbacks, provides code snippets, and offers practical recommendations for reliable data reporting and UI handling.
This article explains various browser scenarios that indicate a user has left a page, compares the Page Visibility API, beforeunload/unload events, navigator.sendBeacon, and pagehide/pageshow handling, and provides practical code examples and recommendations for reliable detection and data reporting.
This article explains why traditional asynchronous requests often fail during page unload, and demonstrates two modern browser APIs—navigator.sendBeacon and fetch with keepalive:true—that reliably transmit small data without blocking the user experience.
Understanding when users leave or hide a page is crucial for UX, analytics, and performance; this guide explains the Page Visibility API, beforeunload/unload events, the sendBeacon method, and pagehide/pageshow handling, offering code examples and best‑practice recommendations for reliable detection and data reporting.
This article explains why traditional fetch or XMLHttpRequest calls often fail during page unload, and demonstrates two modern browser APIs—navigator.sendBeacon and fetch with keepalive:true—that reliably transmit analytics or draft data without blocking the user experience.
