The WheelEvent.deltaY read-only property is a
double representing the vertical scroll amount in the
WheelEvent.deltaMode unit.
Syntax
var dY = event.deltaY;Example
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. |
Obsolete | Initial definition. |
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