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).
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
Last updated on 2017-12-13