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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);

Parameters

namespaceURI is a string representing the namespace against which the element will be checked.

Return value

result is a Boolean that holds the return value true or false.

Example

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

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

Specifications

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Basic supportChrome Full support YesEdge ? Firefox Full support YesIE ? Opera ? Safari ? WebView Android Full support YesChrome Android Full support YesEdge Mobile ? Firefox Android Full support YesOpera Android ? Safari iOS ? Samsung Internet Android ?

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown

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