Listener methods
addCheckpointIdsListener
The addCheckpointIdsListener method registers a listener function with the Checkpoints object that will be called whenever its set of checkpoints changes. Read more.
addCheckpointListener
The addCheckpointListener method registers a listener function with the Checkpoints object that will be called whenever the label of a checkpoint changes. Read more.
delListener
The delListener method removes a listener that was previously added to the Checkpoints object. Read more.