📄 dtd_validation.asp@output=print
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<title>DTD Validation</title>
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<p>From <b>http://www.w3schools.com</b> (Copyright Refsnes Data)</p>
<h1>DTD Validation</h1>
<a href="dtd_entities.asp"><img border="0" src="../images/btn_previous.gif" alt="prev" width="100" height="20" /></a>
<a href="dtd_examples.asp"><img border="0" src="../images/btn_next.gif" alt="next" width="100" height="20" /></a>
<hr />
<p class="intro">With Internet Explorer 5+ you can validate your XML against a DTD.</p>
<hr />
<h2>Validating With the XML Parser
</h2>
<p>If you try to open an XML document, the XML Parser might generate an error.
By accessing the parseError object, you can retrieve the error code, the error text,
or even the line that caused the error.</p>
<p><b>Note:</b> The load( ) method is used for files, while the loadXML( )
method is used for strings.</p>
<table border="1" width="100%" class="ex" cellspacing="0"><tr><td>
<pre>var xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async="false";
xmlDoc.validateOnParse="true";
xmlDoc.load("note_dtd_error.xml");</pre>
<pre>document.write("<br />Error Code: ");
document.write(xmlDoc.parseError.errorCode);
document.write("<br />Error Reason: ");
document.write(xmlDoc.parseError.reason);
document.write("<br />Error Line: ");
document.write(xmlDoc.parseError.line);</pre></td></tr></table>
<p><a target="_blank" href="tryit.asp@filename=note_error_three">Try it Yourself</a>
or just <a target="_blank" href="note_dtd_error.xml">look at the XML file</a></p>
<hr />
<h2>Turning Validation Off
</h2>
<p>Validation can be turned off by setting the XML parser's validateOnParse="false".
</p>
<table border="1" width="100%" class="ex" cellspacing="0"><tr><td>
<pre>var xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async="false";
xmlDoc.validateOnParse="false";
xmlDoc.load("note_dtd_error.xml");</pre>
<pre>document.write("<br />Error Code: ");
document.write(xmlDoc.parseError.errorCode);
document.write("<br />Error Reason: ");
document.write(xmlDoc.parseError.reason);
document.write("<br />Error Line: ");
document.write(xmlDoc.parseError.line);</pre></td></tr></table>
<p><a target="_blank" href="tryit.asp@filename=note_error_four">Try it Yourself</a></p>
<hr />
<h2>A General XML Validator</h2>
<p>To help you check your xml files, you
can <a target="_blank" href="../dom/dom_validate.asp">syntax-check any XML file</a>
here.</p>
<hr />
<h2>The parseError Object</h2>
<p>You can read more about the parseError object
in our XML <a href="../dom/default.asp">DOM tutorial</a>.</p>
<hr />
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<p>From <b>http://www.w3schools.com</b> (Copyright Refsnes Data)</p>
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