The Node.lookupNamespaceURI() method accepts a prefix and
returns the namespace URI associated with it on the given node if found (and
null if not).
Syntax
var namespace = node.lookupNamespaceURI(prefix);Parameters
prefix- The prefix to look for. If this parameter is
null, the method will return the default namespace URI, if any.
Return value
A DOMString containing the namespace URI. If the prefix is not found, it
returns null.
Specifications
| Specification | Status | Comment |
|---|---|---|
| DOM The definition of 'Node: lookupNamespaceURI' in that specification. |
Living Standard |
Browser compatibility
BCD tables only load in the browser
In Firefox, due to bug 312019, this method
does not work with dynamically assigned namespaces (i.e., those set with
Node.prefix).