Element: gesturestart event

Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.

Thegesturestart 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, agestureend event will be fired.

It is a proprietary event specific to WebKit.

Syntax

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

addEventListener("gesturestart", (event) => { })ongesturestart = (event) => { }

Event type

AGestureEvent. Inherits fromEvent.

Event properties

This interface also inherits properties of its parents,UIEvent andEvent.

GestureEvent.rotationRead 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.scaleRead 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.