TouchList: length property

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

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.

const target = document.getElementById("target");

target.addEventListener("touchstart", (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
  const touch =
    ev.targetTouches.length >= 1
      ? ev.targetTouches.item(0)
      : ev.touches.item(0);
});

Specifications

Browser compatibility