selectSingleNode Method
TOC
Collapse the table of content
Expand the table of content

selectSingleNode Method

 

Applies the specified pattern-matching operation to this node's context and returns the first matching node.

var objXMLDOMNode = oXMLDOMNode.selectSingleNode(queryString);

 queryString

A string specifying an XPath expression.

An object. Returns the first node that matches the given pattern-matching operation. If no nodes match the expression, returns a null value.

The following script example creates an IXMLDOMNode object and sets it to the first instance of an AUTHOR node with a BOOK parent. It then displays the text of the node.

System_CAPS_noteNote

You can use books.xml to run this sample code.

var xmlDoc = new ActiveXObject("Msxml2.DOMDocument.6.0");
var currNode;
xmlDoc.async = false;
xmlDoc.load("books.xml");
if (xmlDoc.parseError.errorCode != 0) {
   var myErr = xmlDoc.parseError;
   WScript.Echo("You have error " + myErr.reason);
} else {
   xmlDoc.setProperty("SelectionLanguage", "XPath");
   currNode = xmlDoc.selectSingleNode("//book/author");
   WScript.Echo(currNode.text);
}

Output

Gambardella, Matthew

HRESULT selectSingleNode(
    BSTR queryString,
    IXMLDOMNode **resultNode);

 queryString[in]

A string specifying an XPath expression.

 resultNode[out, retval]

The first node that is selected by the given pattern-matching operation. If no nodes match the expression, returns a null value.

S_OK

The value returned if successful.

S_FALSE

The value returned if there is no match.

E_INVALIDARG

The value returned if the resultNode parameter is Null.

The selectSingleNode method is similar to the selectNodes method, but returns only the first matching node rather than the list of all matching nodes.

This member is an extension of the World Wide Web Consortium (W3C) Document Object Model (DOM).

Implemented in: MSXML 3.0 and MSXML6.0

Show:
© 2016 Microsoft