WheelEvent.deltaY - Web API 接口参考 编辑

 

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.

浏览器兼容性

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

• Desktop
• Mobile

Feature	Chrome	Edge	Firefox (Gecko)	Internet Explorer	Opera	Safari (WebKit)
Basic support	31	(Yes)	17.0 (17.0)	9.0 [1]	18	9.0

Feature	Android	Edge	Firefox Mobile (Gecko)	IE Phone	Opera Mobile	Safari Mobile
Basic support	(Yes)	(Yes)	17.0 (17.0)	?	(Yes)	未实现

[1] IE9 支持一个规范的一个旧版本的草稿, 这里的值的类型是 long 而不是一个 double 类型的值.

另见

• wheel
• WheelEvent