The Intersection Observer API can be used to asynchronously observe changes in the intersection of a target Element with an ancestor element (for infinite scrolling lists) or the top-level document's viewport (for 'viewability' tracking).



Working draft or equivalent

Status in Chromium


Enabled by default (tracking bug) in:

  • Chrome for desktop release 51
  • Chrome for Android release 51
  • Android WebView release 51

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.


Search tags

intersection, observer,

Last updated on 2020-11-09