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XPathNSResolver: lookupNamespaceURI() method

The lookupNamespaceURI method looks up the namespace URI associated to the given namespace prefix within an XPath expression evaluated by the XPathEvaluator interface.

Syntax

js

lookupNamespaceURI(prefix)

Parameters

prefix

A string representing the prefix to look for.

Return value

A string representing the associated namespace URI or null if none is found.

Specifications

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Browser compatibility

See also

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https://developer.mozilla.org/en-US/docs/Web/API/XPathNSResolver/lookupNamespaceURI