WheelEvent.deltaY
WheelEvent.deltaY
只读属性是一个 double
类型值,声明垂直滚动量以WheelEvent.deltaMode
为单位。
语法
var dY = event.deltaY;
例子
var syntheticEvent = new WheelEvent("syntheticWheel", {"deltaY": 4, "deltaMode": 0});
console.log(syntheticEvent.deltaY);
规范
Specification | Status | Comment |
---|---|---|
Document Object Model (DOM) Level 3 Events Specification WheelEvent.deltaY |
Obsolete | Initial definition. |
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