Returns the X coordinate of the touch point relative to the screen, not including any scroll offset.
Returns the X coordinate of the touch point relative to the screen, not including any scroll offset.
A number.
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.
js
// 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}`); } }, false, );
Specification |
---|
Touch Events # dom-touch-screenx |
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
screenX |
22 | ≤18 |
52This interface is only exposed if a touch input device is detected.18–24Removed in bug 888304 due to web compatibility issues. |
No | 15 | No | 4.4 | 25 | 6 | 14 | 10 | 1.5 |
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https://developer.mozilla.org/en-US/docs/Web/API/Touch/screenX