Node.isDefaultNamespace()

The Node.isDefaultNamespace()method accepts a namespace URI as an argument and returns a Boolean with a value of true if the namespace is the default namespace on the given node or false if not.

Syntax

result = node.isDefaultNamespace(namespaceURI) 

• result holds the return value true or false.
• namespaceURI is a string representing the namespace against which the element will be checked.

Example

var XULNS = "https://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
var el = document.getElementsByTagNameNS(XULNS, 'textbox')[0];

alert(el.isDefaultNamespace(XULNS)); // true

Specification

• DOM Level 3 Core: isDefaultNamespace
• Code snippets: isDefaultNamespace