How to compare two datepicker dates using jQuery

Question

This is my code:

var $from = $("#fromDate").datepicker('getDate');
var $to = $("#toDate").datepicker('getDate');
if($from > $to)
   alert("from date shouldn't greater than To date");

It is working if it is two dates in the same year. Otherwise, for example fromDate='1/12/2012'(dd/mm/yyyy) toDate='18/6/2013'(dd/mm/yyyy), while you check the condition, it is not working. It throws an alert, which is given.

Answer 1

Auto limit your dates instead. In this example the second combo box won't allow you to pick a lower date than the one you pick on the first one.

$(document).ready(function() {

  $("#txtFromDate").datepicker({

    numberOfMonths: 2,

    onSelect: function(selected) {
      $("#txtToDate").datepicker("option", "minDate", selected)
    }
  });

  $("#txtToDate").datepicker({

      numberOfMonths: 2,

      onSelect: function(selected) {
         $("#txtFromDate").datepicker("option", "maxDate", selected)

      }
  });
});

Here is a working demo.

Answer 2

You need to use this to get the day/month/year:

var day1 = $("#datepicker").datepicker('getDate').getDate();
var month1 = $("#datepicker").datepicker('getDate').getMonth() + 1;
var year1 = $("#datepicker").datepicker('getDate').getFullYear();

After that, you can compare the values.

Answer 3

Date.parse(fromDate) > Date.parse(toDate)

Example

var sDate = $('#EFT_FRM_DATE').val();
var eDate = $('#EFF_TO_DATE').val();

if (Date.parse(sDate) > Date.parse(eDate) || Date.parse(sDate) == Date.parse(eDate)) {
   ShowMessage(CurrencySetupExchangeIndex.EndDateGreaterStartDate, 'Error');
   //alert
   return false;
   return;
}

Simplified statement:

if (Date.parse(sDate) >= Date.parse(eDate)) {...

Answer 4

$(document).ready(function() {
    $("#startdate").datepicker({
            todayBtn:  1,
            format: "dd-mm-yyyy",
            startDate: '1d',
            autoclose: true,
    }).on('changeDate', function (selected) {
        var minDate = new Date(selected.date.valueOf());
        $('#enddate').datepicker('setStartDate', minDate);
        if($('#enddate').val() != "" && ($("#enddate").datepicker("getDate") == null || Date.parse($("#enddate").datepicker("getDate"))< Date.parse($("#startdate").datepicker("getDate")))) {
            var date = new Date($("#startdate").datepicker("getDate")).toLocaleDateString();
            date = date.split("/")
            date = date[0] + "-" + date[1] + "-" + date[2]
            $('#enddate').val(date)
        }
    });

    $("#enddate").datepicker({
        format: "dd-mm-yyyy",
        autoclose: true,
    })
});