This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2017.
The MouseEvent.y property is an alias for the MouseEvent.clientY property.
| Specification |
|---|
| CSSOM View Module> # dom-mouseevent-y> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
y |
1 | 12 | 53 | ≤12.1 | 3.1 | 18 | 53 | ≤12.1 | 2 | 1.0 | 4.4 | 2 |
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https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/y