SVGPointList: initialize() method

The initialize() method of the SVGPointList interface clears the list then adds a single new DOMPoint object to the list.

Syntax

initialize(obj)

Parameters

obj

A DOMPoint object containing the coordinates of the point to be added when the list is initialized.

Return value

The added DOMPoint object.

Exceptions

NoModificationAllowedError DOMException

Thrown if the list is read-only.

Examples

The following example shows an SVG which contains a <polyline> with five coordinate pairs. Returning SVGPointList.length gives the value 5. After calling initialize(), returning SVGPointList.length gives the value 1.

<svg id="svg" viewBox="-10 -10 120 120" xmlns="http://www.w3.org/2000/svg">
  <polyline
    id="example"
    stroke="black"
    fill="none"
    points="50,0 21,90 98,35 2,35 79,90" />
</svg>

const example = document.getElementById("example");
console.log(example.points.length); // 5;
const point = document.getElementById("svg").createSVGPoint();
example.points.initialize(point);
console.log(example.points.length); // 1

Specifications

Browser compatibility