Chapter 57: Timeline.isActive()

Core Idea

isActive() reports whether the playhead is currently moving across this timeline's span, and neither it nor any ancestor timeline is paused.

Key Concepts

• Before start or after finish: not active.
• Paused, or nested inside a paused ancestor: not active.
• Playhead exactly on the start time: counts as active.
• gsap.globalTimeline.isActive() is always true.

Code Examples

if (tl.isActive()) { /* currently animating */ }

Connects To

• Timeline.progress() / totalProgress(): numeric alternatives that don't factor in paused state or ancestor timelines.