files/en-us/web/api/svgfemorphologyelement/in1/index.md
{{APIRef("SVG")}}
The in1 read-only property of the {{domxref("SVGFEMorphologyElement")}} interface reflects the {{SVGAttr("in")}} attribute of the given {{SVGElement("feMorphology")}} element.
An {{domxref("SVGAnimatedString")}} object.
in Property of feMorphology Element<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
<defs>
<filter id="morphologyFilter">
<!-- Applies a morphology filter to the SourceGraphic -->
<feMorphology in="SourceGraphic" operator="dilate" radius="2" />
</filter>
</defs>
<rect
x="20"
y="20"
width="100"
height="100"
fill="lightblue"
filter="url(#morphologyFilter)" />
</svg>
We can access the in attribute of the feMorphology element.
// Select the feMorphology element
const morphologyNode = document.querySelector("feMorphology");
console.log(morphologyNode.in1.baseVal); // Output: "SourceGraphic"
{{Specifications}}
{{Compat}}