Navigator.maxTouchPoints - Web API 接口参考 编辑

返回当前设备能够支持的最大同时触摸的点数。  

语法

touchPoints = navigator.maxTouchPoints;

样例

if (navigator.maxTouchPoints > 1) {
  // 浏览器支持多点触控
}

Specification	Status	Comment
Pointer Events – Level 2 maxTouchPoints	Working Draft	Non-stable version.
Pointer Events maxTouchPoints	Recommendation	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	Firefox (Gecko)	Internet Explorer	Opera	Safari
Basic support	35[1]	29 (29)[2]	10 -ms 11	?	未实现

Feature	Android	Chrome for Android	Firefox Mobile (Gecko)	IE Mobile	Opera Mobile	Safari Mobile
Basic support	?	35[1]	29.0 (29)[2]	10 -ms 11	?	未实现

[1] This was implemented in bug 248918.

[2] Gecko supports this feature behind the preference dom.w3c_pointer_events.enabled, defaulting to false.