The length
read-only property indicates the number of items (touch points) in a given TouchList
.
TouchList.length
Value
The number of touch points in touchList
.
Examples
This code example illustrates the use of the TouchList
interface's item
method and the length
property.
target = document.getElementById("target"); target.addEventListener('touchstart', function(ev) { // If this touchstart event started on element target, // set touch to the first item in the targetTouches list; // otherwise set touch to the first item in the touches list var touch; if (ev.targetTouches.length >= 1) touch = ev.targetTouches.item(0); else touch = ev.touches.item(0); }, false);
Specifications
Specification |
---|
Touch Events # dom-touchlist-length |
Browser compatibility
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
length |
18
|
≤18
|
52
18-24
Removed in
bug 888304 due to web compatibility issues.
|
No
|
15
|
10.1
|
1
|
18
|
6
|
14
|
2
|
1.0
|
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https://developer.mozilla.org/en-US/docs/Web/API/TouchList/length