PointerEvent.width

The width read-only property of the PointerEvent interface represents the width of the pointer's contact geometry along the x-axis, measured in CSS pixels. Depending on the source of the pointer device (such as a finger), for a given pointer, each event may produce a different value.

If the input hardware cannot report the contact geometry to the browser, the width defaults to 1.

Syntax

var contactWidth = pointerEvent.width;

Return value

contactWidth
The width of the event's contact area (in CSS pixels).

Example

This example illustrates using the PointerEvent interface's width and width properties to calculate the contact area.

target.addEventListener("pointerdown", function(ev) {
   // Calculate the contact area
   var area = ev.width * ev.height;
 }, false);

Specifications

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

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support5512

No

411

11

102

42 No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic support555512

No

411

11

102

42 No

1. 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.

2. Returns values in screen pixels instead of CSS document pixels.

Document Tags and Contributors

 Contributors to this page: lpd-au, chrisdavidmills, abbycar, jpmedley, teoli, rolfedh, AFBarstow
 Last updated by: lpd-au,