The x read-only property of the SVGFEBlendElement interface describes the horizontal coordinate of the position of an SVG filter primitive as a SVGAnimatedLength.
It reflects the <feBlend> element's x filter primitive attribute value. The <feBlend> SVG filter blends two input images together using commonly used imaging software blending modes.
The attribute is a <length> or <percentage>. The <coordinate> is a length in the user coordinate system that is the given distance from the origin of the user coordinate system along the x-axis. If the x attribute is a percent value, the property value is relative to the width of the filter region in user coordinate system units. The default value is 0.
const feBlend = document.querySelector("feBlend");
const leftPosition = feBlend.x;
console.log(leftPosition.baseVal.value); // the `x` valueSVGFEBlendElement.y<blend-mode> data typemix-blend-mode property