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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html lang="en-US" xml:lang="en-US" xmlns="http://www.w3.org/1999/xhtml">
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<title>XML DOM</title>
 
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<h1>XML DOM</h1>

<a href="xml_parser.asp"><img border="0" src="../images/btn_previous.gif" alt="previous" width="100" height="20" /></a>
<a href="xml_to_html.asp"><img border="0" src="../images/btn_next.gif" alt="next" width="100" height="20" /></a>

<hr />
<p class="intro">
The DOM (Document Object Model) defines a standard way for accessing and 
manipulating documents.</p>

<hr />

<h2>The XML DOM</h2>
<p>
The XML DOM (XML Document Object Model) defines a 
standard way for accessing and manipulating XML documents.
</p>
<p>
The DOM views XML documents as a tree-structure. All 
elements can be accessed through the DOM tree. Their content (text and 
attributes) can be modified or 
deleted, and new elements can be created. The elements, their 
text, and their attributes are all known as nodes.
</p>
<p>
In the examples below we use the following DOM reference to get the text from the 
&lt;to&gt; element:</p>
<p>
xmlDoc.getElementsByTagName(&quot;to&quot;)[0].childNodes[0].nodeValue</p>
<ul>
	<li><b>xmlDoc</b> - the XML document created by the parser.</li>
	<li><b>getElementsByTagName(&quot;to&quot;)[0]</b> - the first &lt;to&gt; element</li>
	<li><b>childNodes[0]</b> - the first child of the &lt;to&gt; element (the text 
	node)</li>
	<li><b>nodeValue</b> - the value of the node (the text itself)</li>
</ul>
<p>
You can learn more about the XML DOM in our <a href="../dom/default.asp">XML DOM 
tutorial</a>.</p>

<hr />

<h2>The HTML DOM</h2>
<p>
The HTML DOM (HTML Document Object Model) defines a 
standard way for accessing and manipulating HTML documents.
</p>
<p>
All 
HTML elements can be accessed through the HTML DOM.</p>
<p>
In the examples below we use the following DOM reference to change the text of 
the HTML element where id=&quot;to&quot;:</p>
<p>
document.getElementById(&quot;to&quot;).innerHTML=</p>
<ul>
	<li><b>document</b> - the HTML document</li>
	<li><b>getElementById(&quot;to&quot;)</b> - the HTML element where id=&quot;to&quot;</li>
	<li><b>innerHTML</b> - the inner text of the HTML element</li>
</ul>
<p>
You can learn more about the HTML DOM in our <a href="../htmldom/default.asp">HTML 
DOM tutorial</a>.</p>

<hr />
<h2>Parsing an XML File - A Cross browser Example</h2>

<p>The following code loads an XML document (&quot;note.xml&quot;) into the XML parser:</p>

<table width="100%" border="1" class="ex" cellspacing="0">
<tr><td>
<pre>&lt;html&gt;
&lt;head&gt;
&lt;script type=&quot;text/javascript&quot;&gt;
function parseXML()
{
try //Internet Explorer
  {
  xmlDoc=new ActiveXObject(&quot;Microsoft.XMLDOM&quot;);
  }
catch(e)
  {
  try //Firefox, Mozilla, Opera, etc.
    {
    xmlDoc=document.implementation.createDocument(&quot;&quot;,&quot;&quot;,null);
    }
  catch(e)
    {
    alert(e.message);
    return;
    }
  }
xmlDoc.async=false;
xmlDoc.load(&quot;note.xml&quot;);

document.getElementById(&quot;to&quot;).innerHTML=
xmlDoc.getElementsByTagName(&quot;to&quot;)[0].childNodes[0].nodeValue;
document.getElementById(&quot;from&quot;).innerHTML=
xmlDoc.getElementsByTagName(&quot;from&quot;)[0].childNodes[0].nodeValue;
document.getElementById(&quot;message&quot;).innerHTML=
xmlDoc.getElementsByTagName(&quot;body&quot;)[0].childNodes[0].nodeValue;
}
&lt;/script&gt;
&lt;/head&gt;
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