PointerEvent.pointerId

The pointerId property of the PointerEvent interface is an identifier assigned to a given pointer event. The identifier is unique, being different from the identifiers of all other active pointer events. Since the value may be randomly generated, it is not guaranteed to convey any particular meaning.

Syntax

var id = pointerEvent.pointerId;

Return value

id
The pointer event's unique identifier number.

Example

The following code snippet compares a previously saved pointerId with the one of the pointerdown event that was just fired.

let id; // Let's assume that this is a previously saved pointerId

target.addEventListener('pointerdown', function(event) {
  // Compare previous event's ID that was cached
  // to current event's ID and handle accordingly
  if (id === event.pointerId) process_event(event);
}, false);

Specifications

Specification Status Comment
Pointer Events – Level 2
The definition of 'pointerId' in that specification.
Working Draft Non-stable version.
Pointer Events
The definition of 'pointerId' in that specification.
Recommendation Initial definition.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
pointerIdChrome Full support 55Edge Full support 12Firefox Full support 59
Full support 59
Full support 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 Full support 10Opera Full support 42Safari No support NoWebView Android Full support 55Chrome Android Full support 55Edge Mobile Full support 12Firefox Android No support No
No support No
Full support 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 Full support 42Safari iOS No support NoSamsung Internet Android Full support 6.0

Legend

Full support  
Full support
No support  
No support
User must explicitly enable this feature.
User must explicitly enable this feature.

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