I'm disturbed you should ask. Several answers but for me the main one is simplicity (lack of it). Add to that, lack of explicit memory handling and dynamic typ

I'm disturbed you should ask. Several answers but for me the main one is simplicity (lack of it). Add to that, lack of explicit memory handling and dynamic typing at least. You could say you could use a small subset of the language, in which case you'd have to enforce that subset only is used, in which case you'd strip out the unused stuff from the language, and then you don't have javascript any more.