TouchList.length

The length read-only property indicates the number of items (touch points) in a given TouchList.

Syntax

var numTouches = touchList.length;

Return value

numTouches
The number of touch points in touchList.

Example

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 Status Comment
Touch Events ā€“ Level 2 Draft Non-stable version.
Touch Events Recommendation Initial definition.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
lengthChrome Full support 18Edge Full support YesFirefox Full support 52
Full support 52
No support 18Ā ā€” 24
IE No support NoOpera Full support 15Safari No support NoWebView Android Full support YesChrome Android Full support YesFirefox Android Full support 6Opera Android Full support 14Safari iOS Full support YesSamsung Internet Android ?

Legend

Full support Ā 
Full support
No support Ā 
No support
Compatibility unknown Ā 
Compatibility unknown