The points read-only property of the SVGPolylineElement interface reflects the base (i.e., static) value of the element's points attribute. Modifications via the SVGPointList object are reflected in the points attribute, and vice versa.
An SVGPointList object.
points property<svg xmlns="http://www.w3.org/2000/svg" width="400" height="200">
<polyline
id="myPolyline"
points="100,10 150,50 100,90 50,50"
fill="none"
stroke="blue"
stroke-width="4" />
</svg>const polylineElement = document.getElementById("myPolyline");
// Access the points property
console.dir(polylineElement.points); // Output: SVGPointList object containing points (100,10), (150,50), (100,90), (50,50)