WheelEvent: deltaY プロパティ
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
WheelEvent.deltaY は読み取り専用のプロパティで、 WheelEvent.deltaMode 単位での垂直スクロール量を表す double です。
値
数値です。
例
js
const syntheticEvent = new WheelEvent("syntheticWheel", {
deltaY: 4,
deltaMode: 0,
});
console.log(syntheticEvent.deltaY);
仕様書
| Specification |
|---|
| UI Events # dom-wheelevent-deltay |