I do it for my cat

Learnt something new today. To set default parameters, should no input be given, check if type of variable is undefined. If it is, define default parameters.  Perhaps I have already learnt this but it has left my memory stores. I think this is new information to my brain though. Pretty cool! Thanks to edabit.com  , my new favourite site <3 <3 <3 function moodToday(mood) { mood = typeof mood != 'undefined' ? mood : "neutral";  return ("Today, I am feeling " + mood); }