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The WheelEvent
interface represents events that occur due to the user moving a mouse wheel or similar input device.
This is the standard wheel event interface to use.
Old versions of browsers implemented the two non-standard and non-cross-browser-compatible MouseWheelEvent
and MouseScrollEvent
interfaces. Use this interface and avoid the latter two.
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a:hover text { fill: #0095DD; pointer-events: all;}
Constructor
WheelEvent()
- Creates a
WheelEvent
object.
Properties
This interface inherits properties from its parents, MouseEvent
, UIEvent
and Event
.
WheelEvent.deltaX
Read only- Returns a
double
representing the horizontal scroll amount. WheelEvent.deltaY
Read only- Returns a
double
representing the vertical scroll amount. WheelEvent.deltaZ
Read only- Returns a
double
representing the scroll amount for the z-axis. WheelEvent.deltaMode
Read only- Returns an
unsigned 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.
Methods
This interface doesn't define any methods, but inherits methods from its parents, MouseEvent
, UIEvent
and Event
.
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 | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|---|
Basic support | 31 | (Yes) | 17.0 (17.0) | 9.0 | 18 | 7.0 |
window.WheelEvent |
(Yes) | (Yes) | 17.0 (17.0) | 9.0 | (Yes) | (Yes) [1] |
Feature | Android | Android Webview | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile | Chrome for Android |
---|---|---|---|---|---|---|---|
Basic support | No support | (Yes) | 17.0 (17.0) | ? | (Yes) | No support | (Yes) |
window.WheelEvent |
No support | (Yes) | 17.0 (17.0) | ? | (Yes) | ? | (Yes) |
[1] Safari doesn't support WheelEvent
actually; nevertheless they return object for window.WheelEvent
.
See also
wheel
- Interfaces replaced by this one:
- Gecko's legacy mouse wheel event object:
MouseScrollEvent
- Non-gecko browsers' legacy mouse wheel event object:
MouseWheelEvent
- Gecko's legacy mouse wheel event object:
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