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 AnimationEffectTimingReadOnly
represents the duration in milliseconds to complete a single iteration of the animation.
Note: In AnimationEffectTiming
, a mutable subclass of AnimationEffectTimingReadOnly
used withKeyframeEffects
, the property acts as both a getter and a setter.
Syntax
// Getting the duration of each iteration var animationLoopDuration = animation.effect.timing.duration; // Setting the duration of each iteration animation.effect.timing.duration = 5000;
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 Red Queen's Race example, we set the background's animation to begin halfway through its first loop:
var sceneryTimingBackground = { duration: 36000, iterations: Infinity }; var sceneryTimingForeground = { duration: 12000, iterations: Infinity }; var background1 = document.getElementById('background1'); // Animating the background var background1Movement = background1.animate( sceneryFrames, sceneryTimingBackground ); // Setting the background animation's start position based on its duration background1Movement.currentTime = background1Movement.effect.timing.duration / 2;
Specifications
Specification | Status | Comment |
---|---|---|
Web Animations The definition of 'AnimationEffectTimingReadOnly.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
AnimationEffectReadOnly.timing
returns aAnimationEffectTimingReadOnly
object...- ...while
AnimationEffect.timing
returns a mutableAnimationEffectTiming
object. - CSS's
transition-duration
andanimation-duration