moment.locale('ja');

datePickerConfig: {
  // first day of week (0: Sunday, 1: Monday etc)
  firstDay: 0,

  // Additional text to append to the year in the calendar title
  yearSuffix: '年',

  // Render the month after year in the calendar title
  showMonthAfterYear: true,

  // Render days of the calendar grid that fall in the next or previous month
  showDaysInNextAndPreviousMonths: true,

  // internationalization
  i18n: {
      previousMonth : '前月',
      nextMonth     : '次月',
      months: moment.localeData()._months,
      weekdays: moment.localeData()._weekdays,
      weekdaysShort: moment.localeData()._weekdaysShort
  }
},