DeviceOrientation & DeviceMotion events

API for detecting orientation and motion events from the device running the browser.

Document.execCommand()

Allows running commands to manipulate the contents of an editable region in a document switched to designMode

sandbox attribute for iframes

Method of running external site pages with reduced privileges (e.g. no JavaScript) in iframes.

requestAnimationFrame

API allowing a more efficient way of running script-based animation, compared to traditional methods using timeouts. Also covers support for `cancelAnimationFrame`

Screen Wake Lock API

API to prevent devices from dimming, locking or turning off the screen when the application needs to keep running.

Web Workers

Method of running scripts in the background, isolated from the web page

css property: animation-play-state: running

css property: animation: running