use Microsoft's SCREnc.exe to encode your javascript: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnmind99/html/scriptengine.asp
use Microsoft's Script Encoder to encode your javascript: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnmind99/html/scriptengine.aspdownload it at http://msdn.microsoft.com/downloads/sample.asp?url=/MSDN-FILES/027/001/789/msdncompositedoc.xml&frame=true
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnmind99/html/scriptengine.asp
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnmind99/html/scriptengine.aspdownload it at
http://msdn.microsoft.com/downloads/sample.asp?url=/MSDN-FILES/027/001/789/msdncompositedoc.xml&frame=true
不过这样别人也可以通过另存为得到js,看就看了没什么打不了的,要不然你就把js码加密了,看页看不懂