ITPUB

Feb 22, 2016 · Frontend Development

How to Prevent Web Analytics Data Loss on Page Unload: From Blocking Ajax to Beacon API

This article examines why analytics requests often disappear when users leave a page, reviews traditional blocking tricks such as synchronous Ajax, busy‑wait loops, and image hacks, and then presents optimized approaches like URL or window.name transfer before recommending the modern Beacon API for reliable, non‑blocking data transmission.