The animatedPoints read-only property of the SVGPolygonElement interface reflects the animated value of the element's points attribute. If the points attribute is not being animated, it contains the same value as the points property.
A SVGPointList object.
animatedPoints property<svg xmlns="http://www.w3.org/2000/svg" width="400" height="200">
<polygon id="myPolygon" points="100,10 150,50 100,90 50,50" fill="blue">
<animate
attributeName="points"
values="100,10 150,50 100,90 50,50; 150,10 200,50 150,90 100,50"
dur="2s"
repeatCount="indefinite" />
</polygon>
</svg>const polygonElement = document.getElementById("myPolygon");
// Access the animatedPoints property
console.dir(polygonElement.animatedPoints); // Output: SVGPointList object