You could probably use a Javascript Obfuscater ( http://www.danstools.com/javascript-obfuscate/ or https://javascriptobfuscator.com/Javascript-Obfuscator.aspx ) but you'll always want to make backups of your original code. There are some that are able to obfuscate it but may not be able to reverse it. I've used it to mask emails when my contact forms have gotten spam, but haven't used it for massive amounts of code. However, if you are after protecting that code and making sure no one steals it, than why not use it?