Touch Class Reference

Companion guide
Availability
Available in iOS 2.0 and later.

Overview

The Touch class represents a single touch on the surface. A touch is the presence or movement of a finger that is part of a unique multi-touch sequence. Use the changedTouches method to get all the touch objects that changed in a TouchEvent object.

Tasks

Accessing Properties

Properties

clientX

The x-coordinate of the touch’s location relative to the window’s viewport.

readonly attribute long clientX
Availability

clientY

The y-coordinate of the touch’s location relative to the window’s viewport.

readonly attribute long clientY
Availability

identifier

The unique identifier for this touch object.

readonly attribute unsigned long identifier
Availability

pageX

The x-coordinate of the touch’s location in page coordinates.

readonly attribute long pageX
Availability

pageY

The y-coordinate of the touch’s location in page coordinates.

readonly attribute long pageY
Availability

screenX

The x-coordinate of the touch’s location in screen coordinates.

readonly attribute long screenX
Availability

screenY

The y-coordinate of the touch’s location in screen coordinates.

readonly attribute long screenY
Availability

target

The target of this touch.

readonly attribute EventTarget target
Availability