Touch: screenX property
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Returns the X coordinate of the touch point relative to the screen, not including any scroll offset.
Value
A number.
Examples
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
const src = document.getElementById("source");
src.addEventListener("touchstart", (e) => {
// Iterate through the touch points and log each screenX/Y coordinate.
// The unit of each coordinate is CSS pixels.
for (let 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}`);
}
});
Specifications
| Specification |
|---|
| Touch Events # dom-touch-screenx |
Browser compatibility
| desktop | mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
screenX
|
|
|
|
|
|
|
|
|
|
|
|
|
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- Partial support
- Partial support
- No support
- No support
- Has more compatibility info.