priorityID : number
The priorityID is used to determine which game objects should get priority when input events occur. For example if you haveseveral Sprites that overlap, by default the one at the top of the display list is given priority for input events. You canstop this from happening by controlling the priorityID value. The higher the value, the more important they are considered to the Input events.
Source code: input/InputHandler.js (Line 45)