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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 is 1.


var contactWidth = pointerEvent.width;

Return value

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


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);


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

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 55.0 (Yes) [1] 10 42 No support
Feature Android Android Webview Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support 55.0 No support No support 10 42 No support 55.0

[1] Implementation withdrawn. See bug 1166347.

Document Tags and Contributors

 Contributors to this page: jpmedley, teoli, rolfedh, AFBarstow
 Last updated by: jpmedley,