This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.
The AnimationEffectTimingProperties
dictionary, part of the Web Animations API, is used by Element.animate()
, KeyframeEffectReadOnly()
, and KeyframeEffect()
to describe timing properties for animation effects. These properties are all optional, although without setting a duration
the animation will not play.
Simply put, these properties describe how the user agent should go about making the transition from from keyframe to keyframe, and how to behave when the animation begins and ends.
delay
Optional
direction
Optional
normal
), backwards (reverse
), switches direction after each iteration (alternate
), or runs backwards and switches direction after each iteration (alternate-reverse
). Defaults to "normal"
.duration
Optional
easing
Optional
"linear"
, "ease"
, "ease-in"
, "ease-out"
, and "ease-in-out"
, or a custom "cubic-bezier"
value like "cubic-bezier(0.42, 0, 0.58, 1)"
. Defaults to "linear"
.endDelay
Optional
fill
Optional
"backwards"
), retained after the animation has completed playing ("forwards"
), or both
. Defaults to "none"
.iterationStart
Optional
iterations
Optional
1
, and can also take a value of Infinity
to make it repeat for as long as the element exists.Specification | Status | Comment |
---|---|---|
Web Animations The definition of 'AnimationEffectTimingProperties' in that specification. | Working Draft | Initial definition |
Feature | Chrome | Firefox (Gecko) | Microsoft Edge | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|---|
Basic support | ? | 45 (45)[1] | ? | ? | ? | ? |
Feature | Android | Android Webview | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile | Chrome for Android |
---|---|---|---|---|---|---|---|
Basic support | ? | ? | 45.0 (45)[1] | ? | ? | ? | ? |
[1] The Web Animations API is only enabled by default in Firefox Developer Edition and Nightly builds. You can enable it in beta and release builds by setting the preference dom.animations-api.core.enabled
to true
, and can disable it in any Firefox version by setting this preference to false
.
Element.animate()
KeyframeEffect()
KeyframeEffectReadOnly()
© 2005–2017 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/AnimationEffectTimingProperties