PointerEvent

PointerEvent interface represents the state of a DOM event produced by a pointer such as the geometry of the contact point, the device type that generated the event, the amount of pressure that was applied on the contact surface, etc.

A pointer is a hardware agnostic representation of input devices (such as a mouse, pen or contact point on a touch-enable surface). The pointer can target a specific coordinate (or set of coordinates) on the contact surface such as a screen.

A pointer's hit test is the process a browser uses to determine the target element for a pointer event. Typically, this is determined by considering the pointer's location and also the visual layout of elements in a document on screen media.

构造函数

PointerEvent()
Creates a synthetic—and untrusted— PointerEvent .

特性

This interface inherits properties from MouseEvent and Event .

PointerEvent.pointerId 只读
A unique identifier for the pointer causing the event.
PointerEvent.width 只读
The width (magnitude on the X axis), in CSS pixels, of the contact geometry of the pointer.
PointerEvent.height 只读
The height (magnitude on the Y axis), in CSS pixels, of the contact geometry of the pointer.
PointerEvent.pressure 只读
The normalized pressure of the pointer input in the range 0 to 1 , where 0 and 1 represent the minimum and maximum pressure the hardware is capable of detecting, respectively.
PointerEvent.tangentialPressure 只读
The normalized tangential pressure of the pointer input (also known as barrel pressure or cylinder stress ) in the range -1 to 1 , where 0 is the neutral position of the control.
PointerEvent.tiltX 只读
The plane angle (in degrees, in the range of -90 to 90 ) between the Y–Z plane and the plane containing both the pointer (e.g. pen stylus) axis and the Y axis.
PointerEvent.tiltY 只读
The plane angle (in degrees, in the range of -90 to 90 ) between the X–Z plane and the plane containing both the pointer (e.g. pen stylus) axis and the X axis.
PointerEvent.twist 只读
The clockwise rotation of the pointer (e.g. pen stylus) around its major axis in degrees, with a value in the range 0 to 359 .
PointerEvent.pointerType 只读
Indicates the device type that caused the event (mouse, pen, touch, etc.)
PointerEvent.isPrimary 只读
Indicates if the pointer represents the primary pointer of this pointer type.

方法

PointerEvent.getCoalescedEvents()
Returns a sequence of all PointerEvent instances that were coalesced into the dispatched pointermove 事件。
PointerEvent.getPredictedEvents()
Returns a sequence of PointerEvent instances that the browser predicts will follow the dispatched pointermove event's coalesced events.

Pointer event types

PointerEvent interface has several event types. To determine which event fired, look at the event's type 特性。

注意: It's important to note that in many cases, both pointer and mouse events get sent (in order to let non-pointer-specific code still interact with the user). If you use pointer events, you should call event.preventDefault() to keep the mouse event from being sent as well.
pointerover
This event is fired when a pointing device is moved into an element's hit test boundaries.
pointerenter
This event is fired when a pointing device is moved into the hit test boundaries of an element or one of its descendants, including as a result of a pointerdown event from a device that does not support hover (see pointerdown). This event type is similar to pointerover , but differs in that it does not bubble.
pointerdown
The event is fired when a pointer becomes active . For mouse, it is fired when the device transitions from no buttons depressed to at least one button depressed. For touch, it is fired when physical contact is made with the digitizer. For pen, it is fired when the stylus makes physical contact with the digitizer.
pointermove
This event is fired when a pointer changes coordinates.
pointerrawupdate
This event is fired when any of a pointer's properties change.
pointerup
This event is fired when a pointer is no longer active .
pointercancel
A browser fires this event if it concludes the pointer will no longer be able to generate events (for example the related device is deactived).
pointerout
This event is fired for several reasons including: pointing device is moved out of the hit test boundaries of an element; firing the pointerup event for a device that does not support hover (see pointerup ); after firing the pointercancel event (see pointercancel ); when a pen stylus leaves the hover range detectable by the digitizer.
pointerleave
This event is fired when a pointing device is moved out of the hit test boundaries of an element. For pen devices, this event is fired when the stylus leaves the hover range detectable by the digitizer.
gotpointercapture
This event is fired when an element receives pointer capture.
lostpointercapture
This event is fired after pointer capture is released for a pointer.

GlobalEventHandlers

GlobalEventHandlers.onpointerover
A global event handler pointerover 事件。
GlobalEventHandlers.onpointerenter
A global event handler pointerenter 事件。
GlobalEventHandlers.onpointerdown
A global event handler pointerdown 事件。
GlobalEventHandlers.onpointermove
A global event handler pointermove 事件。
GlobalEventHandlers.onpointerup
A global event handler pointerup 事件。
GlobalEventHandlers.onpointercancel
A global event handler pointercancel 事件。
GlobalEventHandlers.onpointerout
A global event handler pointerout 事件。
GlobalEventHandlers.onpointerleave
A global event handler pointerleave 事件。

范例

Examples of each property, event type, and global event handler are included in their respective reference pages.

规范

规范 状态 Comment
Pointer Events – Level 3
The definition of 'PointerEvent' in that specification.
编者草案 添加 getCoalescedEvents() and getPredictedEvents() methods and pointerrawupdate 事件。
Pointer Events – Level 2
The definition of 'PointerEvent' in that specification.
Recommendation 添加 twist and tangentialPressure 特性。
指针事件
The definition of 'PointerEvent' in that specification.
Obsolete 初始定义。

浏览器兼容性

更新 GitHub 上的兼容性数据
Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
PointerEvent Chrome 55 Edge 12 Firefox 59
59
41
Disabled
Disabled From version 41: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
IE 11
11
部分支持 10
Prefixed
Prefixed Implemented with the vendor prefix: MS
MSDN Pointer events updates .
Opera 42 Safari 13 WebView Android 55 Chrome Android 55 Firefox Android 41
Disabled
41
Disabled
Disabled From version 41: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
Opera Android 42 Safari iOS 13 Samsung Internet Android 6.0
PointerEvent() 构造函数 Chrome 55 Edge 12 Firefox 59
59
41
Disabled
Disabled From version 41: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
IE 11
11
部分支持 10
Prefixed
Prefixed Implemented with the vendor prefix: MS
MSDN Pointer events updates .
Opera 42 Safari 13 WebView Android 55 Chrome Android 55 Firefox Android 41
Disabled
41
Disabled
Disabled From version 41: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
Opera Android 42 Safari iOS 13 Samsung Internet Android 6.0
getCoalescedEvents
Chrome 58 Edge 79 Firefox 59 IE No Opera 45 Safari No WebView Android 58 Chrome Android 58 Firefox Android 部分支持 59
Disabled
部分支持 59
Disabled
Disabled From version 59: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
Opera Android 43 Safari iOS No Samsung Internet Android 7.0
height Chrome 55 Edge 12 Firefox 59
59
41
Disabled
Disabled From version 41: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
IE 11
11
部分支持 10
Returns values in screen pixels instead of CSS document pixels.
Opera 42 Safari 13 WebView Android 55 Chrome Android 55 Firefox Android 41
Disabled
41
Disabled
Disabled From version 41: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
Opera Android 42 Safari iOS 13 Samsung Internet Android 6.0
isPrimary Chrome 55 Edge 12 Firefox 59
59
41
Disabled
Disabled From version 41: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
IE 10 Opera 42 Safari 13 WebView Android 55 Chrome Android 55 Firefox Android 41
Disabled
41
Disabled
Disabled From version 41: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
Opera Android 42 Safari iOS 13 Samsung Internet Android 6.0
pointerId Chrome 55 Edge 12 Firefox 59
59
41
Disabled
Disabled From version 41: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
IE 10 Opera 42 Safari 13 WebView Android 55 Chrome Android 55 Firefox Android 41
Disabled
41
Disabled
Disabled From version 41: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
Opera Android 42 Safari iOS 13 Samsung Internet Android 6.0
pointerType Chrome 55 Edge 12 Firefox 59
59
41
Disabled
Disabled From version 41: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
IE 11
11
部分支持 10
Returns an integer enumeration instead of a string.
Opera 42 Safari 13 WebView Android 55 Chrome Android 55 Firefox Android 41
Disabled
41
Disabled
Disabled From version 41: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
Opera Android 42 Safari iOS 13 Samsung Internet Android 6.0
pressure Chrome 55 Edge 12 Firefox 59
59
41
Disabled
Disabled From version 41: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
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
Disabled
41
Disabled
Disabled From version 41: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
Opera Android 42 Safari iOS 13 Samsung Internet Android 6.0
tangentialPressure Chrome 58 Edge 79 Firefox 59
59
54
Disabled
Disabled From version 54: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
IE No Opera 45 Safari 13 WebView Android 58 Chrome Android 58 Firefox Android 54
Disabled
54
Disabled
Disabled From version 54: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
Opera Android 43 Safari iOS 13 Samsung Internet Android 7.0
tiltX Chrome 55 Edge 12 Firefox 59
59
41
Disabled
Disabled From version 41: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
IE 10 Opera 42 Safari 13 WebView Android 55 Chrome Android 55 Firefox Android 41
Disabled
41
Disabled
Disabled From version 41: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
Opera Android 42 Safari iOS 13 Samsung Internet Android 6.0
tiltY Chrome 55 Edge 12 Firefox 59
59
41
Disabled
Disabled From version 41: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
IE 10 Opera 42 Safari 13 WebView Android 55 Chrome Android 55 Firefox Android 41
Disabled
41
Disabled
Disabled From version 41: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
Opera Android 42 Safari iOS 13 Samsung Internet Android 6.0
twist Chrome 58 Edge 18 Firefox 59
59
54
Disabled
Disabled From version 54: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
IE No Opera 45 Safari 13 WebView Android 58 Chrome Android 58 Firefox Android 54
Disabled
54
Disabled
Disabled From version 54: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
Opera Android 43 Safari iOS 13 Samsung Internet Android 7.0
width Chrome 55 Edge 12 Firefox 59
59
41
Disabled
Disabled From version 41: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
IE 11
11
部分支持 10
Returns values in screen pixels instead of CSS document pixels.
Opera 42 Safari 13 WebView Android 55 Chrome Android 55 Firefox Android 41
Disabled
41
Disabled
Disabled From version 41: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true ). To change preferences in Firefox, visit about:config.
Opera Android 42 Safari iOS 13 Samsung Internet Android 6.0

图例

完整支持
完整支持
部分支持
部分支持
不支持
不支持
实验。期望将来行为有所改变。
实验。期望将来行为有所改变。
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。
要求使用供应商前缀或不同名称。
要求使用供应商前缀或不同名称。

另请参阅