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
.
var contactWidth = pointerEvent.width;
contactWidth
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. |
Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic support | 55 | 12 |
No 411 |
11 102 |
42 | No |
Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
---|---|---|---|---|---|---|---|
Basic support | 55 | 55 | 12 |
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.
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/PointerEvent/width