Duration
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 duration
property of the Web Animations API represents the duration in milliseconds to complete a single iteration of the animation.
Note: Element.animate()
, KeyframeEffectReadOnly.KeyframeEffectReadOnly()
, and KeyframeEffect.KeyframeEffect()
all accept an object of timing properties including duration
. The value of duration
corresponds directly to AnimationEffectTimingReadOnly.duration
in timing
objects returned by AnimationEffectReadOnly
, KeyframeEffectReadOnly
, and KeyframeEffect
.
Syntax
// how long each loop should last var timingProperties = { duration: 250 }
Value
The number of milliseconds each iteration of the animation takes to complete. Defaults to 0
.
Note: In this level of this specification, the string value auto
is equivalent to 0
. This is a forwards-compatiblity measure since a future level of this specification will introduce group effects where the auto
value expands to include the duration of the child effects.
Examples
In the Pool of Tears example, each tear is passed a random duration
via its timing object:
// Randomizer function var getRandomMsRange = function(min, max) { return Math.random() * (max - min) + min; } // Loop through each tear tears.forEach(function(el) { // Animate each tear el.animate( tearsFalling, { delay: getRandomMsRange(-1000, 1000), // randomized for each tear duration: getRandomMsRange(2000, 6000), // randomized for each tear iterations: Infinity, easing: "cubic-bezier(0.6, 0.04, 0.98, 0.335)" }); });
Specifications
Specification | Status | Comment |
---|---|---|
Web Animations The definition of 'duration' in that specification. |
Working Draft | Editor's draft. |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|
Basic support | (Yes) | 48 (48) | 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
). - CSS's
transition-duration
andanimation-duration
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/duration