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<b>XML DOM Tutorial</b><br />
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<h1>Parsing the XML DOM</h1>
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<p class="intro">
Most browsers have a build-in XML parser to read and manipulate XML.</p>
<p class="intro">
The parser converts XML into a JavaScript accessible object. </p>
<hr />
<h2>Examples</h2>
<p>W3Schools examples are browser and platform independent. These examples work in
all modern browsers.</p>
<p><a target="_blank" href="tryit.asp@filename=try_dom_parser">Load and parse an XML file</a></p>
<p><a target="_blank" href="tryit.asp@filename=try_dom_parser2">Load and parse an XML
string</a></p>
<hr />
<h2>Parsing XML</h2>
<p>
All modern browsers have a build-in XML parser that can be used to read and manipulate XML.</p>
<p>The parser reads XML into memory and converts it into an XML DOM object that
can be accesses with JavaScript. </p>
<p>There are some differences between Microsoft's XML parser and the parsers
used in other browsers. The Microsoft parser supports loading of both XML files
and XML strings (text), while other browsers use separate parsers. However, all parsers contain functions to traverse XML trees, access,
insert, and delete nodes. </p>
<p>In this tutorial we will show you how to create scripts that will work in both Internet Explorer and
other browsers.</p>
<hr />
<h2>Loading XML with Microsoft's XML Parser</h2>
<p>
Microsoft's XML parser is built into Internet
Explorer 5 and higher.</p>
<p>The following JavaScript fragment loads an XML document ("<a target="_blank" href="books.xml">books.xml</a>") into
the parser:</p>
<table width="100%" border="1" class="ex" cellspacing="0" id="table16">
<tr><td>
<pre>xmlDoc=new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async="false";
xmlDoc.load("books.xml");</pre>
</td></tr>
</table>
<p>
<b>Code explained:</b></p>
<ul>
<li>The first line creates an empty Microsoft XML
document object. </li>
<li>The second
line turns off asynchronized loading, to make sure that the parser will not
continue execution of the script before the document is fully loaded.</li>
<li>The third
line tells the parser to load an XML document called "books.xml".</li>
</ul>
<p>The following JavaScript fragment loads a string called txt into
the parser:</p>
<table width="100%" border="1" class="ex" cellspacing="0" id="table17">
<tr><td>
<pre>xmlDoc=new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async="false";
xmlDoc.loadXML(txt);</pre>
</td></tr>
</table>
<p><b>Note:</b> The <b>loadXML()</b> method is used for loading strings (text), <b>load()</b> is used for loading
files.</p>
<hr />
<h2>XML Parser in Firefox and Other Browsers</h2>
<p>The following JavaScript fragment loads an XML document ("<a target="_blank" href="books.xml">books.xml</a>") into
the parser:</p>
<table width="100%" border="1" class="ex" cellspacing="0" id="table18">
<tr><td>
<pre>xmlDoc=document.implementation.createDocument("","",null);
xmlDoc.async="false";
xmlDoc.load("books.xml");</pre>
</td></tr>
</table>
<p>
<b>Code explained:</b></p>
<ul>
<li>The first line creates an empty XML
document object.</li>
<li>The second
line turns off asynchronized loading, to make sure that the parser will not
continue execution of the script before the document is fully loaded.</li>
<li>The third
line tells the parser to load an XML document called "books.xml".</li>
</ul>
<p>The following JavaScript fragment loads a string called txt into
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