SVGForeignObjectElement: y property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

The y read-only property of the SVGForeignObjectElement interface describes the y-axis coordinate of the <foreignObject> element. It reflects the computed value of the y attribute on the <foreignObject> element.

The attribute value is a <length>, <percentage>, or <number>. The numeric value of the SVGAnimatedLength.baseVal is the y-coordinate of the <foreignObject> element in the user coordinate system.

Value

An SVGAnimatedLength.

Example

Given the following SVG:

html
<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
  <defs>
    <foreignObject id="object1" x="50" y="75" width="100" height="50">
      <div xmlns="http://www.w3.org/1999/xhtml">
        <p>This is a foreign object.</p>
      </div>
    </foreignObject>
    <foreignObject id="object2" x="25%" y="50%" width="10%" height="10%">
      <div xmlns="http://www.w3.org/1999/xhtml">
        <p>This is another foreign object.</p>
      </div>
    </foreignObject>
  </defs>
  <rect x="0" y="0" width="200" height="100" fill="lightblue" />
  <rect x="0" y="100" width="200" height="100" fill="lightgreen" />
</svg>

We can access the computed values of the y attributes:

js
const foreignObjects = document.querySelectorAll("foreignObject");
const yObject1 = foreignObjects[0].y;
const yObject2 = foreignObjects[1].y;

console.dir(yObject1.baseVal.value); // output: 75
console.dir(yObject2.baseVal.value); // output: 100 (50% of 200)

Specifications

Specification
Scalable Vector Graphics (SVG) 2
# __svg__SVGForeignObjectElement__y

Browser compatibility

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
Chrome – Full support
Chrome 1 (Release date: 2008-12-11)
footnote Full support
Edge – Full support
Edge 12 (Release date: 2015-07-29)
footnote Full support
Firefox – Full support
Firefox 3 (Release date: 2008-06-17)
footnote Full support
Opera – Full support
Opera 12.1 (Release date: 2012-11-20)
footnote Full support
Safari – Full support
Safari 3.1 (Release date: 2008-03-18)
footnote Full support
Chrome Android – Full support
Chrome Android 18 (Release date: 2012-06-27)
footnote Full support
Firefox for Android – Full support
Firefox for Android 4 (Release date: 2011-03-29)
footnote Full support
Opera Android – Full support
Opera Android 12.1 (Release date: 2012-10-09)
footnote Full support
Safari on iOS – Full support
Safari on iOS 2 (Release date: 2008-07-11)
footnote Full support
Samsung Internet – Full support
Samsung Internet 1 (Release date: 2013-04-27)
footnote Full support
WebView Android – Full support
WebView Android 3 (Release date: 2011-02-22)
footnote Full support
WebView on iOS – Full support
WebView on iOS 2 (Release date: 2008-07-11)
footnote Full support

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support

See also