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# DOMNode->lookupNamespaceURI()

(no version information, might be only in CVS)

DOMNode->lookupNamespaceURI() -- Gets the namespace URI of the node based on the prefix

## 说明

class DOMNode {
string lookupNamespaceURI ( string prefix )
}

Gets the namespace URI of the node based on the `prefix`.

## 参数

`prefix`

  The prefix of the namespace.

## 返回值

The namespace URI of the node.

## 参见

DOMNode->lookupPrefix()

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DOMNode->isSupported() | 上一级 | DOMNode->lookupPrefix()