Chapter 49: Timeline.eventCallback()

Core Idea

eventCallback() gets or sets an event callback (onComplete, onUpdate, onStart, onReverseComplete, onRepeat, etc.) after the timeline already exists, instead of only at creation time.

Reference Tables

Parameter	Type	Default	Description
type	String	—	callback name, case-sensitive (e.g. "onComplete")
callback	Function	null	function to run
params	Array	null	arguments to pass

Code Examples

tl.eventCallback("onComplete", () => console.log("done"));
tl.eventCallback("onComplete"); // read the current callback back

Key Takeaways

1. Useful for attaching/removing callbacks dynamically after a timeline is already built, not just via the vars object at creation.