The Touch.pageY
read-only property returns the Y coordinate of the touch point relative to the viewport, including any scroll offset.
The Touch.pageY
read-only property returns the Y coordinate of the touch point relative to the viewport, including any scroll offset.
A long
value that represents the Y coordinate of the touch point relative to the viewport, including any scroll offset.
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.
js
// 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}`); } }, false, );
Specification |
---|
Touch Events # dom-touch-pagey |
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
pageY |
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/pageY