W3School TIY Editor
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<html> <body> <h3> This demonstrates a parser error(Only works in Internet Explorer): </h3> <script type="text/javascript"> var xmlDoc = new ActiveXObject("Microsoft.XMLDOM"); xmlDoc.async="false"; xmlDoc.validateOnParse="true"; xmlDoc.load("/example/dtde/note_dtd_error.xml"); 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); </script> </body> </html>