W3School TIY Editor
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<html> <head> <script type="text/javascript" src="/example/xdom/loadxmldoc.js"> </script> </head> <body> <script type="text/javascript"> xmlDoc=loadXMLDoc("/example/xdom/books.xml"); newNode=xmlDoc.createElement("book"); x=xmlDoc.documentElement; y=xmlDoc.getElementsByTagName("book"); document.write("Book elements before: " + y.length); document.write("<br />"); x.insertBefore(newNode,y[3]); y=xmlDoc.getElementsByTagName("book"); document.write("Book elements after: " + y.length); </script> </body> </html>