SVGMarkerElement.viewBox

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>.

<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"
        viewBox="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>

let marker = document.getElementById("arrow");
console.log(marker.viewBox.baseVal.width); //10

Specifications

Specification
Scalable Vector Graphics (SVG) 1.1 (Second Edition) # __svg__SVGFitToViewBox__viewBox

Browser compatibility

BCD tables only load in the browser