SVGFECompositeElement: k4 property
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The k4 read-only property of the SVGFECompositeElement interface reflects the k4 attribute of the given <feComposite> element.
Value
An SVGAnimatedNumber object.
Examples
In this example, two <feComposite> elements are defined in a filter, each with a different k4 attribute.
html
<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
<filter id="filter1">
<feImage
href="https://mdn.github.io/shared-assets/images/examples/progress-pride-flag.jpg"
width="140"
x="30"
y="10" />
<feComposite
in2="SourceGraphic"
operator="arithmetic"
k1="0.1"
k2="0.2"
k3="0.3"
k4="0.4" />
</filter>
<circle cx="100" cy="50" r="30" filter="url(#filter1)" />
</svg>
We can access the k4 attribute:
js
const composites = document.querySelectorAll("feComposite");
console.log(composites[0].k4.baseVal); // output: 0.4
Specifications
| Specification |
|---|
| Filter Effects Module Level 1 # dom-svgfecompositeelement-k4 |
Browser compatibility
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