$('#textDefault').datePicker();
                $('#textPrevNext').datePicker({ prev: '<u>P</u>', next: '<u>N</u>' });
                $('#textChangeMonthYear').datePicker({ changeMonthYear: true });
                $('#textMinMaxDate1').datePicker({ minDate: -5, maxDate: 5 });
$('#textMinMaxDate2').datePicker({ minDate: '2014-10-20', maxDate: '2014-10-25' });
                $('#textMonthCount').datePicker({ monthCount: 3 });
                $('#textHoliday1').datePicker({
    monthCount: 2,
    holiday: ['2014-01-01', '2015-01-01', '2016-01-01']
});
$('#textHoliday2').datePicker({
    monthCount: 3,
    holiday: function(moment) {
        return moment.date() % 5 == 0;
    }
});
                $('#textDisable1').datePicker({
    monthCount: 2,
    disabled: function(moment) {
        var division = $('input[name=radioDisabled]:checked').val();
        return moment.date() % division == 0;
    }
});
$('#textDisable2').datePicker({
    minDate: -20,
    maxDate: +20,
    monthCount: 3,
    disabled: function(moment) {
        var division = $('input[name=radioDisabled]:checked').val();
        return moment.date() % division == 0;
    }
});
                $('#textRangeFrom').datePicker({ minDate: 0, monthCount: 3, range: '#textRangeTo' });
$('#textRange1').datePicker({
    minDate: 0,
    monthCount: 3,
    range: ['#textRange2', '#textRange3', '#textRange4'],
    disabled: function(moment) {
        return moment.date() % 8 == 0;
    }
});
$('#textRangeDisabled1').datePicker({
    minDate: 0,
    monthCount: 3,
    range: ['#textRangeDisabled2', '#textRangeDisabled3'],
    disabled: [
        function(moment) {
            return 10 < moment.date();
        },
        function(moment) {
            return moment.date() < 10 || 20 < moment.date();
        },
        function(moment) {
            return moment.date() < 20;
        }
    ]
});
                You can set a weekdayName, directly. Or you can change locale of Moment.js using moment.locale('ko'), before initialize.
$('#textWeekdayName').datePicker({ weekdayName: [ 'a', 'b', 'c', 'd', 'e', 'f', 'g' ] });