Age calculator made using jQuery

What are you most proud of, and what would you do differently next time?

I am proud of the way i managed to get the logic of the JavaScript thorugh trial and error. Next time I will try and spend a bit more time thinking my code through.

What challenges did you encounter, and how did you overcome them?

I kept on getting negative numbers for the values. I eventually overcome them by checking if the number of the value of user input was higher than the current month day or year. I added 12 then modulo 12.

What specific areas of your project would you like help with?

I would like some suggestions on how I could make my code cleaner.