Interface Touch
interface Touch {
clientX: number;
clientY: number;
force: number;
identifier: number;
pageX: number;
pageY: number;
radiusX: number;
radiusY: number;
rotationAngle: number;
screenX: number;
screenY: number;
target: EventTarget;
}
clientX: number;
clientY: number;
force: number;
identifier: number;
pageX: number;
pageY: number;
radiusX: number;
radiusY: number;
rotationAngle: number;
screenX: number;
screenY: number;
target: EventTarget;
}
 Properties
ReadonlyclientX
clientX: number
ReadonlyclientY
clientY: number
Readonlyforce
force: number
Readonlyidentifier
identifier: number
ReadonlypageX
pageX: number
ReadonlypageY
pageY: number
ReadonlyradiusX
radiusX: number
ReadonlyradiusY
radiusY: number
ReadonlyrotationAngle 
rotationAngle: number
ReadonlyscreenX
screenX: number
ReadonlyscreenY
screenY: number
A single contact point on a touch-sensitive device. The contact point is commonly a finger or stylus and the device may be a touchscreen or trackpad.
MDN Reference