Validate that end date is greater than start date with jQuery

Question

How do I check/validate in jQuery whether end date [textbox] is greater than start date [textbox]?

Answer 1

this should work

$.validator.addMethod("endDate", function(value, element) {
            var startDate = $('#date_open').val();
            return Date.parse(startDate) <= Date.parse(value) || value == "";
        }, "* End date must be after start date");