The WheelEvent()
constructor returns a newly created FocusEvent
object.
Syntax
var wheelEvent = new WheelEvent(typeArg, wheelEventInit);
Properties
typeArg
- Is a
DOMString
representing the name of the event. wheelEventInit
Optional- Is a
WheelEventInit
dictionary, having the following fields:"deltaX"
, optional and defaulting to0.0
, is adouble
representing the horizontal scroll amount in thedeltaMode
unit."deltaY"
, optional and defaulting to0.0
, is adouble
representing the vertical scroll amount in thedeltaMode
unit."deltaZ"
, optional and defaulting to0.0
, is adouble
representing the scroll amount for the z-axis in thedeltaMode
unit."deltaMode"
, optional and defaulting to0
, is aunsigned long
representing the unit of the delta values scroll amount. Permitted values are:Constant Value Description DOM_DELTA_PIXEL
0x00
The delta values are specified in pixels. DOM_DELTA_LINE
0x01
The delta values are specified in lines. DOM_DELTA_PAGE
0x02
The delta values are specified in pages.
The
WheelEventInit
dictionary also accepts fields from theMouseEventInit
,UIEventInit
andEventInit
dictionaries.
Specifications
Specification | Status | Comment |
---|---|---|
Document Object Model (DOM) Level 3 Events Specification The definition of 'WheelEvent()' in that specification. |
Working Draft | Initial definition |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | (Yes) | 17.0 (17.0) | Not supported | (Yes) | (Yes) |
Feature | Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|
Basic support | (Yes) | 17.0 (17.0) | Not supported | (Yes) | (Yes) |
See also
- The
WheelEvent
interface it belongs to.