I have created a form comprising of two Date fields, date_required and date_implemented. Now, there is a validation check on date_implemented field. It is that the date_implemented field can accept dates that are 10 days after the date_required field. Else error will be displayed and focus should be on date_implemented field. Also, the form cannot be saved till all validations in the form are successfully passed. Further, there is a Days field that displays number of days elapsed between date_required and date_implemented. Please provide with requisite code both in JavaSript and FormCalc.