The baseVal property of the SVGAnimatedEnumeration interface represents the value of an SVG enumeration.
An integer representing the base value of the enumeration. Ths is the non-animated content value of the corresponding attribute.
The allowed values depend on the attribute that is reflected.
TypeErrorThrown if the property is set to a constant that is not in the set of defined enumerations, or to 0, which represents the "unknown attribute" value.
Consider this snippet with a <clipPath> element: Its clipPathUnits is associated with an SVGAnimatedEnumeration object.
<svg viewBox="0 0 100 100" width="200" height="200">
<clipPath id="clip1" clipPathUnits="userSpaceOnUse">
<circle cx="50" cy="50" r="35" />
</clipPath>
<!-- Some reference rect to materialized to clip path -->
<rect id="r1" x="0" y="0" width="45" height="45" />
</svg>The following JavaScript gets the element, and logs the baseVal of the SVGClipPathElement.clipPathUnits property.
const clipPathElt = document.getElementById("clip1");
console.log(clipPathElt.clipPathUnits.baseVal); // Logs 1 that correspond to userSpaceOnUse