Apendix 6: The Pointer API event object

This is a selected list of event object attributes so it is always worth checking to see if anything new and useful turns up in the future.

Attribute	Description
currentTarget	Identifies the HTML element at the point of contact. Exposes additional data (such as the element id)
pointerId	Unique identity for the pointer object.
clientX, or x	Horizontal position of the point of contact relative to the viewport but excluding any scrolling
clientY, or y	Vertical position of the point of contact relative to the viewport but excluding any scrolling
pageX	Horizontal position of the point of contact on the page (including any scroll)
pageY	Vertical position of the point of contact on the page (including any scroll)
screenX	Horizontal position of the point of contact on the PC screen
screenY	Vertical position of the point of contact on the PC screen
pointerType	“mouse”, “touch” or “pen”
movementX	Horizontal movement since last pointermove event
movementY	Vertical movement since last pointermove event
altKey, ctrlKey, shiftKey	Key states – true for down
button	Indicates which mouse buttons are down if any
height, width	Approximate area of contact for a touch (1 x 1 for a mouse)