Returns a promise so that you can uses promises to track when a tween or timeline is complete.
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Timeline
Methods
.add()
.addLabel()
.addPause()
.call()
.clear()
.currentLabel()
.delay()
.duration()
.endTime()
.eventCallback()
.from()
.fromTo()
.getChildren()
.getTweensOf()
.invalidate()
.isActive()
.iteration()
.kill()
.nextLabel()
.pause()
.paused()
.play()
.previousLabel()
.progress()
.recent()
.remove()
.removeLabel()
.removePause()
.repeat()
.repeatDelay()
.restart()
.resume()
.reverse()
.reversed()
.seek()
.set()
.shiftChildren()
.startTime()
.then()
.time()
.timeScale()
.to()
.totalDuration()
.totalProgress()
.totalTime()
.tweenFromTo()
.tweenTo()
.yoyo()
Timeline
.then()
.then( callback:Function ) : Promise
Returns a promise so that you can uses promises to track when a tween or timeline is complete.
Parameters
callback: Function
The function that you want to handle the Timeline's promise that is generated.
Returns : Promise
Details
Some people prefer to use Promises instead of onComplete callbacks. You can now tag on a then() call to the end of any tween or timeline that’ll return a Promise.
gsap.timeline.to(".class", {duration: 1, x: 100}).then(yourFunction).then(...);