Each point within a chart can be in several states. These states are represented by the numbers that are enumerated in the list below:
The point is not hovered and not selected (normal state);
The point is hovered;
The point is selected;
The point is hovered and selected.
You can also use the isHovered() and isSelected() point methods to check whether a point is hovered or selected.
For information on members that a series object exposes, refer to the Series object description.