XPathNSResolver.lookupNamespaceURI() - Web APIs 编辑

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

Syntax

DOMString XPathNSResolver.lookupNamespaceURI(prefix);

Parameters

prefix

A DOMString representing the prefix to look for.

Return value

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

Specifications

See also

• XPathEvaluator
• Node.lookupNamespaceURI()