Web/API/Touch/screenX

Summary

Returns the X coordinate of the touch point relative to the screen, not including any scroll offset.

Syntax

var x = touchItem.screenX;

Return value

x: The X coordinate of the touch point relative to the screen, not including any scroll offset.

Example

This example illustrates how to access the Touch object's Touch.screenX and Touch.screenY properties. The Touch.screenX property is the horizontal (x) coordinate of a touch point relative to the screen in CSS pixels. The Touch.screenY property is the vertical coordinate of a touch point relative to the screen in CSS pixels.

In following simple code snippet, we assume the user initiates multiple touch contacts on an element with an id of source and then releases contacts with the surface. When the touchstart event handler is invoked, each touch point's Touch.screenX and Touch.screenY coordinates are accessed.

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

src.addEventListener('touchstart', function(e) {
  // Iterate through the touch points and log each screenX/Y coordinate.
  // The unit of each coordinate is CSS pixels.
  var i;
  for (i=0; i < e.touches.length; i++) {
    console.log("touchpoint[" + i + "].screenX = " + e.touches[i].screenX);
    console.log("touchpoint[" + i + "].screenY = " + e.touches[i].screenY);
  }
}, 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

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`screenX`	Chrome Full support 22	Edge Full support ≤18	Firefox Full support 52 Notes' Full support 52 Notes' Notes' Touch events support has been fixed and reenabled in Windows desktop platforms. No support 18 — 24 Notes' Notes' Web compatibility issues seen in bug 888304.	IE No support No	Opera Full support Yes	Safari No support No	WebView Android Full support Yes	Chrome Android Full support Yes	Firefox Android Full support 6	Opera Android Full support Yes	Safari iOS Full support Yes	Samsung Internet Android Full support Yes

Legend

Full support: Full support
No support: No support
See implementation notes.': See implementation notes.

Touch.screenX by Mozilla Contributors is licensed under CC-BY-SA 2.5.