Tryit Editor v1.4

<html> <head> <script type="text/javascript" src="loadxmldoc.js"></script> </head> <body> <script type="text/javascript"> xmlDoc=loadXMLDoc("books.xml"); newCDATA=xmlDoc.createCDATASection("Special Offer & Book Sale"); x=xmlDoc.getElementsByTagName("book")[0]; x.appendChild(newCDATA); document.write(x.lastChild.nodeValue); </script> </body> </html> | Your Result:
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