[jQuery] [validate] Only required when something else is selected?

[jQuery] [validate] Only required when something else is selected?


Say I have a form that has a dropdown for "country", "state" and "zip/
postal code"
Now, if you select "United States", both "state' and "zip/postal code"
are required, but if you select, "Argentina" only "zip/postal code" is
required, and if you select "vietnam" then nothing else is required.