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/**
 * datePicker Date Range
 * From: today
 * To: 1 month
 * 
 * Update to 1 month when the DateFrom is changed too. 
 * 
 * Original Code from: https://jqueryui.com/datepicker/#date-range
 */
 
var dateFormat = "dd/mm/yy";

// Date From - This should start from today
var from = jQuery("#from").datepicker({
  dateFormat: dateFormat,
  minDate: 0,
  numberOfMonths: 2,
}).on('change', function(e) {
  var thisMinDate = getDate( this ),
      oneMonthAhead = new Date( getDate( this ) );

  if ( oneMonthAhead ) {
    oneMonthAhead.setMonth( oneMonthAhead.getMonth() + 1 );
  }

  to.datepicker( "option", "minDate", thisMinDate );
  to.datepicker( "option", "maxDate", new Date( oneMonthAhead ) );
});

// Date To - This should have 1 month ahead of 'from' date. 
var to = jQuery("#to").datepicker({
  minDate: 0,
  maxDate: '+1m',
  numberOfMonths: 2,
}).on( "change", function() {
  from.datepicker( "option", "maxDate", getDate( this ) );
});

function getDate( element ) {
  var date;
  try {
    date = $.datepicker.parseDate( dateFormat, element.value );
  } catch( error ) {
    date = null;
  }
  return date;
}