- Creates a
- Change in rotation (in degrees) since the event's beginning. Positive values indicate clockwise rotation; negative values indicate anticlockwise rotation. Initial value:
- 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:
- Initializes the value of an
GestureEvent. If the event has already being dispatched, this method does nothing.
不属于任何规范。苹果在Safari Developer Library中描述了这个接口。
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