files/en-us/web/api/svgfeconvolvematrixelement/edgemode/index.md
{{APIRef("SVG")}}
The edgeMode read-only property of the {{domxref("SVGFEConvolveMatrixElement")}} interface reflects the {{SVGAttr("edgeMode")}} attribute of the given {{SVGElement("feConvolveMatrix")}} element. The SVG_EDGEMODE_* constants defined on this interface are represented by the numbers 1 through 3, where the default duplicate is 1, wrap is 2, and none is 3.
An {{domxref("SVGAnimatedEnumeration")}} object.
In this example, we retrieve the <feConvolveMatrix> filter element's edgeMode attribute value using the edgeMode property of the SVGFEConvolveMatrixElement interface.
If our SVG contains the following filter:
<feConvolveMatrix kernelMatrix="3 0 0 0 0 0 0 0 -4" id="el" edgeMode="wrap" />
We can access the number associated with the enumerated keyword value of the edgeMode attribute of the feConvolveMatrix element.
const el = document.getElementById("el");
console.log(el.edgeMode.baseVal); // output: 2
{{Specifications}}
{{Compat}}