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<title>XML DOM - Node Types</title>
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<p>From <b>http://www.w3schools.com</b> (Copyright Refsnes Data)</p>
<h1>XML DOM Node Types</h1>
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<p class="intro">The DOM presents a document as a hierarchy of node objects.</p>
<hr />
<h2>Examples</h2>
<p>The examples below use the XML file
<a target="_blank" href="books.xml">books.xml</a>. <br />
A function, <a href="dom_loadxmldoc.asp">loadXMLDoc()</a>, in an external JavaScript is used to load the XML file.</p>
<p><a target="_blank" href="tryit.asp@filename=try_dom_nodetype">Display nodeName and nodeType of all elements</a></p>
<p><a target="_blank" href="tryit.asp@filename=try_dom_nodevalue">Display nodeName and nodeValue of all elements</a></p>
<hr />
<h2>Node Types</h2>
<p>The following table lists the different W3C node types, and which node types they
may have as children:</p>
<table border="1" width="100%" class="ex" cellspacing="0" id="table1">
<tr>
<th width="28%" align="left" valign="top">Node type</th>
<th width="40%" align="left" valign="top">Description</th>
<th width="32%" align="left" valign="top">Children</th>
</tr>
<tr>
<td valign="top">Document</td>
<td valign="top">Represents the entire document (the root-node of the DOM tree)</td>
<td valign="top">Element (max. one), ProcessingInstruction, Comment, DocumentType</td>
</tr>
<tr>
<td valign="top">DocumentFragment</td>
<td valign="top">Represents a "lightweight" Document object, which
can hold a portion of a document</td>
<td valign="top">Element, ProcessingInstruction, Comment, Text, CDATASection,
EntityReference</td>
</tr>
<tr>
<td valign="top">DocumentType</td>
<td valign="top">Provides an interface to the entities defined for the
document</td>
<td valign="top">None</td>
</tr>
<tr>
<td valign="top">ProcessingInstruction</td>
<td valign="top">Represents a processing instruction</td>
<td valign="top">None</td>
</tr>
<tr>
<td valign="top">EntityReference</td>
<td valign="top">Represents an entity reference</td>
<td valign="top">Element, ProcessingInstruction, Comment, Text, CDATASection,
EntityReference</td>
</tr>
<tr>
<td valign="top">Element</td>
<td valign="top">Represents an element</td>
<td valign="top">Element, Text, Comment, ProcessingInstruction, CDATASection,
EntityReference</td>
</tr>
<tr>
<td valign="top">Attr</td>
<td valign="top">Represents an attribute</td>
<td valign="top">Text, EntityReference</td>
</tr>
<tr>
<td valign="top">Text</td>
<td valign="top">Represents textual content in an element
or attribute</td>
<td valign="top">None</td>
</tr>
<tr>
<td valign="top">CDATASection</td>
<td valign="top">Represents a CDATA section in a document (text that will
NOT be parsed by a parser)</td>
<td valign="top">None</td>
</tr>
<tr>
<td valign="top">Comment</td>
<td valign="top">Represents a comment</td>
<td valign="top">None</td>
</tr>
<tr>
<td valign="top">Entity</td>
<td valign="top">Represents an entity</td>
<td valign="top">Element, ProcessingInstruction, Comment, Text, CDATASection,
EntityReference</td>
</tr>
<tr>
<td valign="top">Notation</td>
<td valign="top">Represents a notation declared in the DTD</td>
<td valign="top">None</td>
</tr>
</table>
<br />
<hr />
<h2>Node Types - Return Values</h2>
<p>The following table lists what the nodeName and the nodeValue properties will return
for each node type:</p>
<table border="1" width="100%" class="ex" cellspacing="0" id="table2">
<tr>
<th width="30%" align="left" valign="top">Node type</th>
<th width="40%" align="left" valign="top">nodeName returns</th>
<th width="30%" align="left" valign="top">nodeValue returns</th>
</tr>
<tr>
<td valign="top">Document</td>
<td valign="top">#document</td>
<td valign="top">null</td>
</tr>
<tr>
<td valign="top">DocumentFragment</td>
<td valign="top">#document fragment</td>
<td valign="top">null</td>
</tr>
<tr>
<td valign="top">DocumentType</td>
<td valign="top">doctype name</td>
<td valign="top">null</td>
</tr>
<tr>
<td valign="top">EntityReference</td>
<td valign="top">entity reference name</td>
<td valign="top">null</td>
</tr>
<tr>
<td valign="top">Element</td>
<td valign="top">element name</td>
<td valign="top">null</td>
</tr>
<tr>
<td valign="top">Attr</td>
<td valign="top">attribute name</td>
<td valign="top">attribute value</td>
</tr>
<tr>
<td valign="top">ProcessingInstruction</td>
<td valign="top">target</td>
<td valign="top">content of node</td>
</tr>
<tr>
<td valign="top">Comment</td>
<td valign="top">#comment</td>
<td valign="top">comment text</td>
</tr>
<tr>
<td valign="top">Text</td>
<td valign="top">#text</td>
<td valign="top">content of node</td>
</tr>
<tr>
<td valign="top">CDATASection</td>
<td valign="top">#cdata-section</td>
<td valign="top">content of node</td>
</tr>
<tr>
<td valign="top">Entity</td>
<td valign="top">entity name</td>
<td valign="top">null</td>
</tr>
<tr>
<td valign="top">Notation</td>
<td valign="top">notation name</td>
<td valign="top">null</td>
</tr>
</table>
<br />
<hr />
<h2>NodeTypes - Named Constants</h2>
<table border="1" width="100%" class="ex" cellspacing="0">
<tr>
<th width="15%" align="left" valign="top">NodeType</th>
<th width="85%" align="left" valign="top">Named Constant</th>
</tr>
<tr>
<td valign="top">1</td>
<td valign="top">ELEMENT_NODE</td>
</tr>
<tr>
<td valign="top">2</td>
<td valign="top">ATTRIBUTE_NODE</td>
</tr>
<tr>
<td valign="top">3</td>
<td valign="top">TEXT_NODE</td>
</tr>
<tr>
<td valign="top">4</td>
<td valign="top">CDATA_SECTION_NODE</td>
</tr>
<tr>
<td valign="top">5</td>
<td valign="top">ENTITY_REFERENCE_NODE</td>
</tr>
<tr>
<td valign="top">6</td>
<td valign="top">ENTITY_NODE</td>
</tr>
<tr>
<td valign="top">7</td>
<td valign="top">PROCESSING_INSTRUCTION_NODE</td>
</tr>
<tr>
<td valign="top">8</td>
<td valign="top">COMMENT_NODE</td>
</tr>
<tr>
<td valign="top">9</td>
<td valign="top">DOCUMENT_NODE</td>
</tr>
<tr>
<td valign="top">10</td>
<td valign="top">DOCUMENT_TYPE_NODE</td>
</tr>
<tr>
<td valign="top">11</td>
<td valign="top">DOCUMENT_FRAGMENT_NODE</td>
</tr>
<tr>
<td valign="top">12</td>
<td valign="top">NOTATION_NODE</td>
</tr>
</table>
<br />
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<p>From <b>http://www.w3schools.com</b> (Copyright Refsnes Data)</p>
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