IterationStart
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 iterationStart
property of the Web Animations API represents which repetition the animation begins at and its progress through it.
Note: Element.animate()
, KeyframeEffectReadOnly.KeyframeEffectReadOnly()
, and KeyframeEffect.KeyframeEffect()
all accept an object of timing properties including iterationStart.
The value of iterationStart
corresponds directly to AnimationEffectTimingReadOnly.iterationStart
in timing
objects returned by AnimationEffectReadOnly
, KeyframeEffectReadOnly
, and KeyframeEffect
.
Syntax
// Set the animation to start on its second iteration var timingProperties = { iterationStart = 1 }
Value
A whole number or decimal greater than or equal to 0.
Note: This number represents the iteration index at which the animation effect begins and its progress through that iteration. All animations' iteration indexes start at 0
. Therefor a value of 0.5
would start the animation half way through its first iteration or loop. Meanwhile, a value of 1.2
indicates the animation begins 20% of the way through its second iteration.
Specifications
Specification | Status | Comment |
---|---|---|
Web Animations The definition of 'iterationStart' in that specification. |
Working Draft | Editor's draft. |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | No support | (Yes) | No support |
Feature | Android | Android Webview | Chrome for Android | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|---|---|
Basic support | ? | ? | ? | ? | ? | No support | No support | No support |
See also
- Web Animations API
Element.animate()
,KeyframeEffectReadOnly.KeyframeEffectReadOnly()
, andKeyframeEffect.KeyframeEffect()
all accept an object of timing properties including this one.- The value of this property corresponds to the one in
AnimationEffectTimingReadOnly
(which is thetiming
object forAnimationEffectReadOnly
,KeyframeEffectReadOnly
, andKeyframeEffect
).
License
© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/api/animationeffecttimingproperties/iterationstart