SVGPointList: initialize() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.

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

Syntax

js
initialize(obj)

Parameters

obj

An SVGPoint object containing the coordinates of the point to be added when the list is initialized.

Return value

The added SVGPoint 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.

html
<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>
js
let example = document.getElementById("example");
console.log(example.points.length); //5;
let svgPoint = document.getElementById("svg").createSVGPoint();
example.points.initialize(svgPoint);
console.log(example.points.length); //1

Specifications

Specification
Scalable Vector Graphics (SVG) 2
# __svg__SVGNameList__initialize

Browser compatibility

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