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TransitionEvent: TransitionEvent() constructor - Web APIs | MDN
new TransitionEvent(type)
new TransitionEvent(type, options)
type
A string with the name of the event.
It is case-sensitive and browsers set it to transitionrun
, transitionstart
, transitionend
, or transitioncancel
.
options
Optional
An object that, in addition of the properties defined in Event()
, can have the following properties:
propertyName
Optional
A string containing the name of the CSS property associated with the transition.
It defaults to ""
.
elapsedTime
Optional
A number giving the amount of time the animation has been running,
in seconds, when this event fired, excluding any time the animation was paused.
For an "animationstart"
event, elapsedTime
is 0.0
unless there was a negative value for animation-delay
,
in which case the event will be fired with elapsedTime
containing (-1 * delay)
.
It defaults to 0.0
.
pseudoElement
Optional
A string, defaulting with "::"
, containing the name of the pseudo-element the animation runs on.
If the animation doesn't run on a pseudo-element but on the element, an empty string: ""
.
It defaults to ""
.