It doesn't support dd/mm/yyyy format, and that's why you are getting "Please enter a valid date" message for input like 13/01/2014. You already have the dateITA validator, which uses dd/mm/yyyy format as you need.
The min and max options can be either a date string in the format of YYYY-MM-DD or a Date object. If the form need to validate start and end date, you should take a look at the Validating fields that depend on each other or Compraing dates
Date validation. It is very important to validate the data supplied by the user through a form before you process it.
* @param string str value yyyy-mm-dd.
Description: This script validates a date field to ensure it's in the format mm/dd/yyyy. It also intelligently checks that the date ranges are valid, so something like 02/30/2005 is caught.
I have the validation coding for mm-dd-yyyy format. But i could not modify to convert it to validate required format. Help me.