files/en-us/web/api/svgfemorphologyelement/operator/index.md
{{APIRef("SVG")}}
The operator read-only property of the {{domxref("SVGFEMorphologyElement")}} interface reflects the {{SVGAttr("operator")}} attribute of the given {{SVGElement("feMorphology")}} element. It takes one of the SVG_MORPHOLOGY_OPERATOR_* constants defined on this interface.
An {{domxref("SVGAnimatedEnumeration")}} object.
operator Property<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
<defs>
<filter id="morphologyFilter">
<!-- Applies a morphology filter with the "dilate" operator -->
<feMorphology in="SourceGraphic" operator="dilate" radius="3" />
</filter>
</defs>
<rect
x="20"
y="20"
width="100"
height="100"
fill="lightblue"
filter="url(#morphologyFilter)" />
</svg>
// Select the feMorphology element
const morphologyNode = document.querySelector("feMorphology");
// Access the 'operator' property
const operatorEnum = morphologyNode.operator.baseVal;
console.log(operatorEnum); // Output: 2 (SVG_MORPHOLOGY_OPERATOR_DILATE)
{{Specifications}}
{{Compat}}