JSFiddle - React, Tailwind, and code Playground

HTML

<p>Date:
    <input type="text" id="datepicker" />
</p>

JavaScript

$(function () {
    var startDate = new Date();
    var endDate = new Date(new Date().setFullYear(new Date().getFullYear() + 1));
    var calDate = $("#datepicker");
    var panelButtons = function(input) {
        setTimeout(function() {
            var curDate = startDate;
            var yearSelect = $(calDate).datepicker("widget").find(".ui-datepicker-year");
            var monthSelect = $(calDate).datepicker("widget").find(".ui-datepicker-month");
            var titlePanel = $(calDate).datepicker("widget").find(".ui-datepicker-title");
            monthSelect.hide();
            yearSelect.hide();
            
            var customSelect = $('<select />').attr('id', 'customrange')
                .attr('class', 'ui-datepicker-custom')
                .attr('data-event', 'change')
                .attr('data-handler', 'selectMonth')
                .css('width', '140px');
            customSelect.appendTo(titlePanel);
            
            while (curDate <=endDate) {
                var curMonthNumber = (parseInt(curDate.getMonth()) + 1);
                var curDateValue = (curMonthNumber < 10 ? '0' + curMonthNumber : curMonthNumber) + '-' + curDate.getFullYear();
                if ($('#customrange option[value="' +curDateValue+ '"]').length == 0) {
                    customSelect.append($("<option></option>").attr("value", curDateValue).text(curDateValue));
                }
                curDate.setTime(curDate.getTime() + 86400000);
            }           
            customSelect.change(function(){
                var selectedValue = customSelect.val().split("-");
                var selectedYear = parseInt(selectedValue[1]);
                var selectedMonth = parseInt(selectedValue[0]);
                var date = new Date(selectedYear, selectedMonth - 1, 1);
                
                //$(calDate).datepicker('disable');
                //$(calDate).datepicker({ defaultDate: '' });
                //$(calDate).datepicker('option',...