Support adding event listeners with the "once" option set to true. When set to true, options’s once member indicates that the callback will only be invoked once after which the event listener will be removed.
Status in Chromium
Enabled by default (tracking bug) in:
- Chrome for desktop release 55
- Chrome for Android release 55
- Android WebView release 55
Consensus & Standardization
Last updated on 2020-11-09