This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The y property of the SVGRect interface is an alias for the DOMRect.y property. It describes the vertical coordinate of the position of the element. It reflects the SVG element's y attribute and the CSS y property.
A <coordinate> is a length in the user coordinate system that is the given distance from the origin of the user coordinate system along the relevant axis (the y-axis for Y coordinates, the x-axis for X coordinates). Its syntax is the same as that for <length>.
| 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 | 1.5 | ≤12.1 | 3 | 18 | 4 | ≤12.1 | 1 | 1.0 | 4.4 | 1 |
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https://developer.mozilla.org/en-US/docs/Web/API/SVGRect/y