The Touch.pageX
read-only property returns the X coordinate of the touch point relative to the viewport, including any scroll offset.
Syntax
touchItem.pageX;
Return value
A long
representing the X coordinate of the touch point relative to the viewport, including any scroll offset.
Example
This example illustrates how to access the Touch
object's Touch.pageX
and Touch.pageY
properties. The 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 touchmove
event handler is invoked, each touch point's Touch.pageX
and Touch.pageY
coordinates are accessed via the event's TouchEvent.changedTouches
list.
// Register a touchmove listeners for the 'source' element var src = document.getElementById("source"); src.addEventListener('touchmove', function(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. var i; for (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); } }, false);
Specifications
Specification | Status | Comment |
---|---|---|
Touch Events – Level 2 | Editor's Draft | No change from the previous version. |
Touch Events | Recommendation | Initial definition. |
Browser compatibility
Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|---|
Basic support | 22.0 | (Yes) | 18.0 (18.0)[1] 52.0 (52.0)[2] |
No support | No support | No support |
Feature | Android | Android Webview | Chrome for Android | Edge | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | (Yes) | (Yes) | 6.0 (6.0) | (Yes) | 11 | (Yes) | (Yes) |
[1] Touch events were implemented in Gecko 18.0, but removed again in 24.0 (Firefox 24.0 / Thunderbird 24.0 / SeaMonkey 2.21) on the desktop version of Firefox due to web compatibility issues (bug 888304).
[2] As of Gecko 52.0, touch events support has been fixed and reenabled in Windows desktop platforms.