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Showing content from https://webplatform.github.io/docs/dom/Node/isDefaultNamespace below:

isDefaultNamespace · WebPlatform Docs

isDefaultNamespace Summary

Indicates whether or not a namespace is the default namespace for a document.

Syntax

var isDefault = node.isDefaultNamespace();

Parameters namespace

Data-type: String

The namespace to be compared to the default namespace.

Return Value

Returns an object of type BooleanBoolean

Whether the namespace specified in the namespace parameter is the default namespace for the document.

Examples

The following example compares the default Namespace of the body element to the SVG namespace and then to the xHTML namespace. false then true is displayed.

<!DOCTYPE html>
<html>

<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<title>isDefaultNamespace example</title>
</head>

<body>


   <script type="text/javascript">//<![CDATA[
    var nsSVG='http://www.w3.org/2000/svg';
    alert(document.body.isDefaultNamespace(nsSVG));
    var nsxHTML='http://www.w3.org/1999/xhtml';
    alert(document.body.isDefaultNamespace(nsxHTML));
   //]]></script>
</body>

</html>

Related specifications

DOM Level 3 Core: Recommendation

Attributions

Mozilla Developer Network : [Node.isDefaultNamespace Article]
Microsoft Developer Network: [isDefaultNamespace Method Article]

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