Element: touchcancel event
The touchcancel
event is fired when one or more touch points have been disrupted in an implementation-specific manner.
Some examples of situations that will trigger a touchcancel
event:
- A hardware event occurs that cancels the touch activities. This may include, for example, the user switching applications using an application switcher interface or the "home" button on a mobile device.
- The device's screen orientation is changed while the touch is active.
- The browser decides that the user started touch input accidentally. This can happen if, for example, the hardware supports palm rejection to prevent a hand resting on the display while using a stylus from accidentally triggering events.
- The
touch-action
CSS property prevents the input from continuing. - When the user interacts with too many fingers simultaneously, the browser can fire this event for all existing pointers (even if the user is still touching the screen).
Syntax
Use the event name in methods like addEventListener()
, or set an event handler property.
addEventListener("touchcancel", (event) => {});
ontouchcancel = (event) => {};
Event type
A TouchEvent
. Inherits from Event
.
Event properties
This interface inherits properties from its parent, UIEvent
and Event
.
TouchEvent.altKey
Read only-
A Boolean value indicating whether or not the alt key was down when the touch event was fired.
TouchEvent.changedTouches
Read only-
A
TouchList
of all theTouch
objects representing individual points of contact whose states changed between the previous touch event and this one. TouchEvent.ctrlKey
Read only-
A Boolean value indicating whether or not the control key was down when the touch event was fired.
TouchEvent.metaKey
Read only-
A Boolean value indicating whether or not the meta key was down when the touch event was fired.
TouchEvent.shiftKey
Read only-
A Boolean value indicating whether or not the shift key was down when the touch event was fired.
TouchEvent.targetTouches
Read only-
A
TouchList
of all theTouch
objects that are both currently in contact with the touch surface and were also started on the same element that is the target of the event. TouchEvent.touches
Read only-
A
TouchList
of all theTouch
objects representing all current points of contact with the surface, regardless of target or changed status. TouchEvent.rotation
Non-standard Read only-
Change in rotation (in degrees) since the event's beginning. Positive values indicate clockwise rotation; negative values indicate counterclockwise rotation. Initial value:
0.0
. TouchEvent.scale
Non-standard Read only-
Distance between two digits since the event's beginning. Expressed as a floating-point multiple of the initial distance between the digits at the beginning of the event. Values below 1.0 indicate an inward pinch (zoom out). Values above 1.0 indicate an outward unpinch (zoom in). Initial value:
1.0
.
Examples
Code samples for those events are available on the dedicated page: Touch events.
Specifications
Specification |
---|
Touch Events # event-touchcancel |
Touch Events # dom-globaleventhandlers-ontouchcancel |
Browser compatibility
BCD tables only load in the browser