ThechangedTouches read-only property is aTouchList whose touch points (Touch objects) varies depending on the event type, as follows:

• For thetouchstart event, it is a list of the touch points that became active with the current event.
• For thetouchmove event, it is a list of the touch points that have changed since the last event.
• For thetouchend andtouchcancel events, it is a list of the touch points that have been removed from the surface (that is, the set of touch points corresponding to fingers no longer touching the surface).

Value

ATouchList whoseTouch objects include all the touch points that contributed to this touch event.

Examples

This example illustrates theTouchEvent object'sTouchEvent.changedTouches property. TheTouchEvent.changedTouches property is aTouchList object that contains oneTouch object for each touch point which contributed to the event.

In following code snippet, thetouchmove event handler iterates through thechangedTouches list and prints the identifier of each touch point that changed since the last event.

someElement.addEventListener("touchmove", (e) => {  // Iterate through the list of touch points that changed  // since the last event and print each touch point's identifier.  for (let i = 0; i < e.changedTouches.length; i++) {    console.log(      `changedTouches[${i}].identifier = ${e.changedTouches[i].identifier}`,    );  }});

Specifications

Browser compatibility