SVGTransformList: appendItem() method

The appendItem() method of the SVGTransformList interface inserts a new item at the end of the list.

The inserted item is the item itself and not a copy.

• If newItem is already in a list, it is removed from its previous list before it is inserted into this list.

Syntax

appendItem(newItem)

Parameters

• newItem
  • : An SVGTransform item that is appended to the list.

Return value

An SVGTransform object; the appended item from the list.

Exceptions

• NoModificationAllowedError DOMException
  • : Thrown if SVGTransformList corresponds to a read-only attribute or when the object itself is read-only.

Examples

Appending a New Transformation

<svg width="200" height="200">
  <rect width="100" height="100" fill="red" />
</svg>

const svgElement = document.querySelector("svg");
const rectElement = svgElement.querySelector("rect");

// Access the transform list of the <rect> element
const transformList = rectElement.transform.baseVal;

// Create a new translation transformation
const svgTransform = svgElement.createSVGTransform();
svgTransform.setTranslate(50, 50);

// Append the new transformation to the list
const appendedTransform = transformList.appendItem(svgTransform);

console.dir(appendedTransform); // Output: SVGTransform { type: 2, matrix: SVGMatrix, angle: 0 }
console.log(`Total number of transformations: ${transformList.numberOfItems}`); // Output: 1

Specifications

Browser compatibility

See also

• SVGTransform
• numberOfItems