This is an experimental technologyCheck the Browser compatibility table carefully before using this in production. Summary The AnimationEvent.pseudoElement read-only property is a DOMString, starting with '::', containing the name of the pseudo-element the animation runs on. If the animation doesn't run on a pseudo-element but on the element, an empty string: ''. Syntax name = AnimationEvent.pseudoElement Specifications Specification Status Comment CSS AnimationsThe definition of 'AnimationEvent.pseudoElement' in that specification. Working Draft Initial definition. Browser compatibility The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. Desktop Mobile FeatureChromeEdgeFirefoxInternet ExplorerOperaSafariBasic support No No23 No No NoFeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung InternetBasic support No No No23 No No ?DesktopMobileChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung InternetBasic support Experimental No support No No support No Full support 23 No support No No support No No support No No support No No support No No support No Full support 23 No support No No support No ? Legend Full support Full support No support No support Compatibility unknown Compatibility unknownExperimental. Expect behavior to change in the future.Experimental. Expect behavior to change in the future. See also Chromium Issue 437132 Using CSS animations Animation-related CSS properties and at-rules: animation, animation-delay, animation-direction, animation-duration, animation-fill-mode, animation-iteration-count, animation-name, animation-play-state, animation-timing-function, @keyframes. The AnimationEvent interface it belongs to.