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>.
SVGMarkerElement.viewBox
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
Browser compatibility
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
viewBox |
1
|
12
|
2
|
9
|
≤12.1
|
3
|
3
|
18
|
4
|
≤12.1
|
1
|
1.0
|
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https://developer.mozilla.org/en-US/docs/Web/API/SVGMarkerElement/viewBox
