Tryit Editor v1.8

Source Code:
<!DOCTYPE html> <html> <head> <script src="loadxmldoc.js"> </script> </head> <body> <script> xmlDoc=loadXMLDoc("books.xml"); x=xmlDoc.getElementsByTagName('book'); //Print the value of all "category" attributes for (i=0;i<x.length;i++) { document.write(x[i].getAttribute('category')); document.write("<br>"); } //Remove the value of all "category" attributes for(i=0;i<x.length;i++) { y = x.item(i); y.removeAttribute('category'); } //Print the value of all "category" attributes for (i=0;i<x.length;i++) { document.write(x[i].getAttribute('category')); document.write("<br>"); } </script> </body> </html>
Result:
W3Schools.com - Try it yourself