min_year, min_month, min_day,max_year, max_month, max_dayは与える引数

datepicker_option.js

  var pickerOption = (function(){
    var _format = 'yy-mm-dd'
    ,_min = (function () {
      return getDate(min_year, min_month, min_day);
    })(),
      _max = (function () {
        return getDate(max_year,  max_month, max_day);
    })();

    function getDate(year, month, day) {
      var date = new Date(year, month - 1, day);
      return !/Invalid|NaN/.test(date.toString()) ? date : null;
    }


    return {
          dateFormat : _format,
          minDate : _min,
          maxDate : _max,
          onClose : function(dateText,inst) {
            var inputDate = new Date(dateText);
            if ("id" in inst && /To|From/.test(inst.id) && !/Invalid|NaN/.test(inputDate.toString())) {
              if (inputDate >_max) {
                $(this).val(convertDateToString(_max, '-', 0));
                }
              if (inputDate < _min) {
                $(this).val(convertDateToString(_min, '-', 0));
              }
            }
          }
    };
  })();
$("#hogeFrom").datepicker(pickerOption);