Touch: pageY property

{{ APIRef("Touch Events") }}

The Touch.pageY read-only property returns the Y coordinate of the touch point relative to the viewport, including any scroll offset.

Value

A double floating point value representing the Y coordinate of the touch point relative to the viewport, including any scroll offset.

Examples

This example illustrates how to access the {{domxref("Touch")}} object's {{domxref("Touch.pageX")}} and Touch.pageY properties. The {{domxref("Touch.pageX")}} property is the horizontal coordinate of a touch point relative to the viewport (in CSS pixels), including any scroll offset. The Touch.pageY property is the vertical coordinate of a touch point relative to the viewport (in CSS pixels), including any scroll offset.

In following simple code snippet, we assume the user initiates one or more touch contacts on the source element, moves the touch points and then releases all contacts with the surface. When the {{domxref("Element/touchmove_event", "touchmove")}} event handler is invoked, each touch point's {{domxref("Touch.pageX")}} and Touch.pageY coordinates are accessed via the event's {{domxref("TouchEvent.changedTouches")}} list.

// Register a touchmove listeners for the 'source' element
const src = document.getElementById("source");

src.addEventListener("touchmove", (e) => {
  // Iterate through the touch points that have moved and log each
  // of the pageX/Y coordinates. The unit of each coordinate is CSS pixels.
  for (let i = 0; i < e.changedTouches.length; i++) {
    console.log(`touchpoint[${i}].pageX = ${e.changedTouches[i].pageX}`);
    console.log(`touchpoint[${i}].pageY = ${e.changedTouches[i].pageY}`);
  }
});

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}