SVGMarkerElement: viewBox 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 viewBox read-only property of the SVGMarkerElement interface returns an SVGAnimatedRect object which contains the values set by the viewBox attribute on the <marker>.
Value
An SVGAnimatedRect object. The baseVal property of this object returns an SVGRect object, from which can be returned the x and y co-ordinates, plus the width and height of the <marker> viewBox attribute.
Examples
This example demonstrates how to return the value of the width set for the viewBox attribute of <marker>.
html
<svg id="svg" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
<defs>
<marker
id="arrow"
viewBox="0 0 10 10"
refX="5"
refY="5"
preserveAspectRatio="xMidYMid meet"
markerWidth="6"
markerHeight="6"
orient="auto-start-reverse">
<path d="M 0 0 L 10 5 L 0 10 z" />
</marker>
</defs>
</svg>
js
const marker = document.getElementById("arrow");
console.log(marker.viewBox.baseVal.width); // 10
Specifications
| Specification |
|---|
| Scalable Vector Graphics (SVG) 2 # __svg__SVGFitToViewBox__viewBox |
Browser compatibility
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