How to Define Validation in XML
Posted in
XML | DTD July 03, 2019
This article describe how to define validation in XML.
DTD Validation
Validation in XML file against a DTD need a XML file and its DTD document. first of all made a DTD file. This DTD file defines all elements to keep in the XML file. Then we parse the XML file using the parser() method and generate a document object type.
Validating With the XML Parser
If we first time try to open a xml document, XML parser may be generate a error by accessing the parser object. We might retrieve the error code, the error text, or the line that caused the error.
Note: The load( ) is used for any files, while the loadXML( ) method is used for any type strings.
Example:
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var xmlDocument = new ActiveXObject("MY.XMLDOM");
xmlDocument.async="false";
xmlDocument.validateOnParse="true";
xmlDocucument.load("note_dtd_error.xml");
document.write("<br /> Thisis Error Code: ");
document.write(xmlDocument.parseError.errorCode);
document.write("<br /> This id Error Reason: ");
document.write(xmlDocument.parseError.reason);
document.write("<br />Error Line number: ");
document.write(xmlDoc.parseError.line);
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Turn Validation Off
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var xmlDocument = new ActiveXObject("My.XMLDOM");
xmlDocument.async="false";
xmlDocument.validateOnParse="false";
xmlDocument.load("note_dtd_error.xml");
document.write("<br /> this is Error Code: ");
document.write(xmlDocument.parseError.errorCode);
document.write("<br /> This is Error Reason: ");
document.write(xmlDocument.parseError.reason);
document.write("<br />Error Line number: ");
document.write(xmlDocument.parseError.line);
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further Readings
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