TouchList.length

Summary

This read-only property indicates the number of items (touch points) in a 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 – Level 2 Draft Non-stable version.
Touch Events Recommendation Initial definition.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic supportChrome Full support 18Edge Full support YesFirefox Full support 52
Full support 52
No support 18 — 24
IE No support NoOpera Full support 15Safari No support NoWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support 6Opera Android Full support 15Safari iOS Full support YesSamsung Internet Android ?

Legend

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

Document Tags and Contributors

Last updated by: fscholz,