Question

Problem Statement :
I have to validate a form having fields ‘Start Date’ and ‘End Date’.

Validation Constraint :
Difference between these two dates must not be less than 24 hours.

Example:
Invalid case :
SDate : “01-10-2012 11:59”
EDate : “”02-10-2012 00:00”

SDate : “01-10-2012 02:20”
EDate : “”02-10-2012 02:00”

Valid Case :

SDate : “01-10-2012 02:20”
EDate : “”02-10-2012 03:30”

Note : These two date objects have time value also.

Answer 1

Once you have parsed the 2 strings and created the corresponding Date object, you only have to use :

function isValid(startDate, endDate) {
  return endDate - startDate > 24 * 60 * 60 * 1000;
}