Element: gesturestart event

Non-standard: This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

The gesturestart event is fired when multiple fingers contact the touch surface, thus starting a new gesture. During the gesture, gesturechange events will be fired. When the gesture has ended, a gestureend event will be fired.

It is a proprietary event specific to WebKit.

Syntax

Use the event name in methods like addEventListener(), or set an event handler property.

addEventListener('NameOfTheEvent', (event) => {});

onNameOfTheEvent = (event) => { };

Event type

A GestureEvent. Inherits from Event.

Event properties

This interface also inherits properties of its parents, UIEvent and Event.

GestureEvent.rotation 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.

GestureEvent.scale 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 gesture. Values below 1.0 indicate an inward pinch (zoom out). Values above 1.0 indicate an outward unpinch (zoom in). Initial value: 1.0.

Specifications

Not part of any specification.

Browser compatibility

BCD tables only load in the browser

See also