SVGFEConvolveMatrixElement: in1 property

The in1 read-only property of the SVGFEConvolveMatrixElement interface reflects the in attribute of the given <feConvolveMatrix> element.

Value

An SVGAnimatedString object.

Examples

In this example, the <feConvolveMatrix> element applies a convolution filter to an input graphic specified by the in attribute.

html
<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
  <defs>
    <filter id="convolveFilter">
      <feConvolveMatrix
        in="SourceGraphic"
        order="3"
        kernelMatrix="0 -1 0 -1 4 -1 0 -1 0" />
    </filter>
  </defs>
  <rect
    x="20"
    y="20"
    width="100"
    height="100"
    fill="lightblue"
    filter="url(#convolveFilter)" />
</svg>

We can access the in attribute of the <feConvolveMatrix> element.

js
const convolveMatrix = document.querySelector("feConvolveMatrix");

console.log(convolveMatrix.in1.baseVal); // Output: "SourceGraphic"

Specifications

See also