files/en-us/web/api/svgfediffuselightingelement/in1/index.md
{{APIRef("SVG")}}
The in1 read-only property of the {{domxref("SVGFEDiffuseLightingElement")}} interface reflects the {{SVGAttr("in")}} attribute of the given {{SVGElement("feDiffuseLighting")}} element.
An {{domxref("SVGAnimatedString")}} object.
in Property of feDiffuseLighting Element<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
<defs>
<filter id="diffuseLightingFilter">
<feDiffuseLighting
in="SourceGraphic"
result="diffuseLightingResult"
lighting-color="white"
surfaceScale="1">
<feDistantLight azimuth="45" elevation="55" />
</feDiffuseLighting>
</filter>
</defs>
<rect
x="20"
y="20"
width="100"
height="100"
fill="lightblue"
filter="url(#diffuseLightingFilter)" />
</svg>
We can access the in attribute of the feDiffuseLighting element.
const diffuseLighting = document.querySelector("feDiffuseLighting");
console.log(diffuseLighting.in1.baseVal); // Output: "SourceGraphic"
{{Specifications}}
{{Compat}}