Asynchronous Clipboard API
A modern, asynchronous Clipboard API based on Promises
Async functions make it possible to treat functions returning Promise objects as if they were synchronous.
Allows data to be sent asynchronously to a server with `navigator.sendBeacon`, even after a page was closed. Useful for posting analytics data the moment a user was finished using the page.
API that can be used to understand the visibility and position of DOM elements relative to a containing element or to the top-level viewport. The position is delivered asynchronously and is useful for understanding the visibility of elements and implementing pre-loading and deferred loading of DOM content.
A promise represents the eventual result of an asynchronous operation.
async attribute for external scripts
extendableevent api: waituntil: `waituntil` may be called asynchronously
htmlscriptelement api: async
sourcebuffer api: appendbufferasync
sourcebuffer api: removeasync
xmldocument api: async
ecmascript 2018 (es9)