WheelEvent.deltaMode - Web API 接口参考 编辑

WheelEvent.deltaMode 只读属性返回一个 unsigned long 类型的值, 声明 delta 的滚动值的单位. 可能的值为:

Constant	Value	Description
DOM_DELTA_PIXEL	0x00	delta 的值为 像素 级别.
DOM_DELTA_LINE	0x01	delta 的值为 行 级别.
DOM_DELTA_PAGE	0x02	delta 的值为 页 级别.

语法

var unit = event.deltaMode;

例子

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

console.log(syntheticEvent.deltaMode);

规范

Specification	Status	Comment
Document Object Model (DOM) Level 3 Events Specification WheelEvent.deltaMode	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	18	7.0

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

另见

• wheel
• WheelEvent