WheelEvent.deltaY
The WheelEvent.deltaY read-only property is a double representing the vertical scroll amount in the WheelEvent.deltaMode unit.
Syntax
JavaScript
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var <code>dY = event.deltaY;</code>
Example
JavaScript
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var syntheticEvent = new WheelEvent("syntheticWheel", {"deltaY": 4, "deltaMode": 0}); console.log(syntheticEvent.deltaY);
Specifications
| Specification | Status | Comment |
|---|---|---|
| Document Object Model (DOM) Level 3 Events Specification The definition of 'WheelEvent.deltaY' in that specification. |
Working Draft | Initial definition. |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|
| Basic support | 31 | 17.0 (17.0) | 9.0 [1] | 18 | 9.0 |
| Feature | Android | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|
| Basic support | (Yes) | 17.0 (17.0) | ? | (Yes) | No support |
[1] IE9 supports an old draft of the spec where this value was a long instead of a double.
See also
License
© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/api/wheelevent/deltay