If I enter an invalid date, for example "02", the date field will default the date to "02/01/2017". Expected result is that the date field is cleared. If I enter invalid characters, (#$%^^), the date field is then cleared as expected.

I'm using CoffeeScript: my function right now:

valid: (form) ->
 $(form).validate(
   rules:
     subject: "required"
     due_date:
     date: true
     messages:
        subject: "required"
        due_date:
           date: "must be a valid date"
 )
 $(form).valid()