在此页

• 句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

pressure 只读特性在 PointerEvent interface indicates the normalized pressure of the pointer input.

句法

var pressure = pointerEvent.pressure;
					

返回值

pressure

The normalized pressure of the pointer input in the range of 0 to 1 , inclusive, where 0 and 1 represent the minimum and maximum pressure the hardware is capable of detecting, respectively. For hardware that does not support pressure, such as a mouse, the value is 0.5 when the pointer is active buttons state and 0 否则。

范例

In this snippet, when a pointerdown event is fired, different functions are called depending on the value of the event's pressure 特性。

someElement.addEventListener('pointerdown', function(event) {
  if (event.pressure == 0) {
    // No pressure
    process_no_pressure(event);
  } else if (event.pressure == 1) {
    // Maximum pressure
    process_max_pressure(event);
  } else {
    // Default
    process_pressure(event);
  }
}, false);
					

规范

规范	状态	注释
指针事件 – 2 级 The definition of 'pressure' in that specification.	推荐	非稳定版本。
指针事件 The definition of 'pressure' in that specification.	过时	初始定义。

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
pressure	Chrome 55	Edge 12	Firefox 59 59 Disabled ). To change preferences in Firefox, visit	IE 11 11 部分支持 10 Returns 0 instead of 0.5 on hardware that doesn't support pressure.	Opera 42	Safari 13	WebView Android 55	Chrome Android 55	Firefox Android 41	Opera Android 42	Safari iOS 13	Samsung Internet Android 6.0

图例

完整支持

完整支持

见实现注意事项。

用户必须明确启用此特征。

用户必须明确启用此特征。

另请参阅

• Touch.force

元数据

• 最后修改： Jan 26, 2020

相关话题

1. 指针事件
2. PointerEvent
3. 构造函数

   1. PointerEvent()
4. 特性

   1. height
   2. isPrimary
   3. pointerId
   4. pointerType
   5. pressure
   6. tangentialPressure
   7. tiltX
   8. tiltY
   9. twist
   10. width
5. 方法

   1. getCoalescedEvents()
6. 继承：

   1. MouseEvent
   2. UIEvent
   3. 事件
7. Related pages for Pointer Events

   1. Element.ongotpointercapture
   2. Element.onlostpointercapture
   3. Element.releasePointerCapture()
   4. Element.setPointerCapture()
   5. GlobalEventHandlers.onpointercancel
   6. GlobalEventHandlers.onpointerdown
   7. GlobalEventHandlers.onpointerenter
   8. GlobalEventHandlers.onpointerleave
   9. GlobalEventHandlers.onpointermove
   10. GlobalEventHandlers.onpointerout
   11. GlobalEventHandlers.onpointerover
   12. GlobalEventHandlers.onpointerup
   13. Navigator.maxTouchPoints