EffectTiming.endDelay - Web APIs
the enddelay property of the effecttiming dictionary (part of the web animations api) indicates the number of milliseconds to delay after the active period of an animation sequence.
... element.animate(), keyframeeffectreadonly(), and keyframeeffect() all accept an object of timing properties including enddelay.
... the value of enddelay corresponds directly to animationeffecttimingreadonly.enddelay in timing objects returned by animationeffectreadonly, keyframeeffectreadonly, and keyframeeffect.
...And 2 more matches

EffectTiming.fill - Web APIs
the animation's effects are not visible when its playstate is pending with a delay, when its playstate is finished, or during its enddelay or delay.
... "forwards" the affected element will continue to be rendered in the state of the final animation framecontinue to be applied to the after the animation has completed playing, in spite of and during any enddelay or when its playstate is finished.
... "both" combining the effects of both forwards and backwards: the animation's effects should be reflected by the element(s) state prior to playing and retained after the animation has completed playing, in spite of and during any enddelay, delay and/or pending or finished playstate.

Work with animations - Firefox Developer Tools
delay and enddelay are both represented.
... the img#icon animation: animated the filter and transform properties, to scale the icon and color it lasted 750ms, had an enddelay of 100ms used the compositor thread was given an easing value of ease-in: you can see this by the concave shape of the green bar.

Animation inspector example: Web Animations API - Firefox Developer Tools
rameset = [ { transform: 'scale(1)', filter: 'grayscale(100%)'}, { filter: 'grayscale(100%)', offset: 0.333}, { transform: 'scale(1.5)', offset: 0.666 }, { transform: 'scale(1.5)', filter: 'grayscale(0%)'} ]; var notekeyframeset = [ { opacity: '0', width: '0'}, { opacity: '1', width: '300px'} ]; var iconkeyframeoptions = { duration: 750, fill: 'forwards', easing: 'ease-in', enddelay: 100 } var notekeyframeoptions = { duration: 500, fill: 'forwards', easing: 'ease-out', delay: 150 } var icon = document.getelementbyid("icon"); var note = document.getelementbyid("note"); var iconanimation = icon.animate(iconkeyframeset, iconkeyframeoptions); var noteanimation = note.animate(notekeyframeset, notekeyframeoptions); iconanimation.pause(); noteanimation.pause(); var fir...

AnimationEffect.getComputedTiming() - Web APIs
(also includes effecttiming.enddelay in that calculation.) activeduration the length of time in milliseconds that the animation's effects will run.

EffectTiming - Web APIs
enddelay optional the number of milliseconds to delay after the end of an animation.

Element.animate() - Web APIs
enddelay optional the number of milliseconds to delay after the end of an animation.

Index - Web APIs
1092 effecttiming.enddelay api, animation, effecttiming, experimental, keyframeeffect, property, reference, web animations, animate, enddelay, waapi, web animations api the enddelay property of the effecttiming dictionary (part of the web animations api) indicates the number of milliseconds to delay after the active period of an animation sequence.

KeyframeEffect.KeyframeEffect() - Web APIs
enddelay optional the number of milliseconds to delay after the end of an animation.

KeyframeEffectOptions - Web APIs
enddelay optional the number of milliseconds to delay after the end of an animation.