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

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support18 Yes

52

18 — 24

No15 No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes Yes Yes615 Yes ?

Document Tags and Contributors

Last updated by: fscholz,