The kernelUnitLengthX read-only property of the SVGFEDiffuseLightingElement interface reflects the X component of the kernelUnitLength attribute of the given <feDiffuseLighting> element.
kernelUnitLengthX
SVGFEDiffuseLightingElement
kernelUnitLength
<feDiffuseLighting>
An SVGAnimatedNumber object.
SVGAnimatedNumber