EffectTiming.endDelay - Web APIs
the animation's end time—the time at which an iteration is considered to have finished—is the time at which the animation finishes an iteration (its initial delay, animationeffecttimingreadonly.delay, plus its duration,duration, plus its end delay.
...the value of enddelay corresponds directly to animationeffecttimingreadonly.enddelay in timing objects returned by animationeffectreadonly, keyframeeffectreadonly, and keyframeeffect.

EffectTiming.direction - Web APIs
the value of direction corresponds directly to animationeffecttimingreadonly.direction in timing objects returned by animationeffectreadonly, keyframeeffectreadonly, and keyframeeffect.

EffectTiming.duration - Web APIs
the value of duration corresponds directly to animationeffecttimingreadonly.duration in timing objects returned by animationeffectreadonly, keyframeeffectreadonly, and keyframeeffect.

EffectTiming.easing - Web APIs
the value of easing corresponds directly to animationeffecttimingreadonly.easing in timing objects returned by animationeffectreadonly, keyframeeffectreadonly, and keyframeeffect.

EffectTiming.iterationStart - Web APIs
the value of iterationstart corresponds directly to animationeffecttimingreadonly.iterationstart in timing objects returned by animationeffectreadonly, keyframeeffectreadonly, and keyframeeffect.

EffectTiming.iterations - Web APIs
the value of iterations corresponds directly to animationeffecttimingreadonly.iterations in timing objects returned by animationeffectreadonly, keyframeeffectreadonly, and keyframeeffect.

Index - Web APIs
the animation's end time—the time at which an iteration is considered to have finished—is the time at which the animation finishes an iteration (its initial delay, animationeffecttimingreadonly.delay, plus its duration,duration, plus its end delay.