NamedNodeMap: removeNamedItemNS() method

The removeNamedItemNS() method of the NamedNodeMap interface removes the Attr corresponding to the given namespace and local name from the map.

Syntax

js
removeNamedItemNS(namespace, localName)

Parameters

namespace

The namespace of the attribute to remove from the map

Warning: namespace is the URI of the namespace, not the prefix.

localName

The local name of the attribute to remove from the map.

Return value

The removed Attr.

Exceptions

NotFoundError DOMException

Thrown if there is no attribute with the given namespace and local name.

Example

js
const parser = new DOMParser();
const xmlString =
  '<warning ob:one="test" xmlns:ob="http://www.example.com/ob">Beware!</warning>';
const doc = parser.parseFromString(xmlString, "application/xml");

const pre = document.querySelector("pre");
const warning = doc.querySelector("warning");
const attrMap = warning.attributes;

let result = `The 'ob:one' attribute initially contains '${attrMap["ob:one"].value}'.\n`;

result += "We remove it.\n\n";
attrMap.removeNamedItemNS("http://www.example.com/ob", "one");

result += attrMap["ob:one"]
  ? "And 'ob:one' still exists."
  : "And 'ob:one' is no more to be found.";

pre.textContent = result;

Specifications