WheelEvent.deltaZ

WheelEvent.deltaZ 只读属性是一个 double 类型值，声明 Z 轴滚动量以WheelEvent.deltaMode 为单位。

语法

var dZ = event.deltaZ;

var syntheticEvent = new WheelEvent("syntheticWheel", {"deltaZ": 4, "deltaMode": 0});

console.log(syntheticEvent.deltaZ);

Specification	Status	Comment
Document Object Model (DOM) Level 3 Events Specification WheelEvent.deltaZ	Obsolete	Initial definition.

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