Weird window.onbeforeunload was not mentioned | Hacker News

Hacker News new | past | comments | ask | show | jobs | submit

login

janci on April 9, 2022 | parent | context | favorite | on: Reliably Send an HTTP Request as a User Leaves a P...

Weird window.onbeforeunload was not mentioned

openplatypus on April 9, 2022 | [–]

Probably because this is discouraged.

Check here: https://developer.mozilla.org/en-US/docs/Web/API/Navigator/s...

> However, this is extremely unreliable. In many situations, especially on mobile, the browser will not fire the unload, beforeunload, or pagehide events.

XCSme on April 9, 2022 | [–]

Because it is synchronous/thread-blocking.

The deadline for YC's W25 batch is 8pm PT tonight. Go for it!
Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact