JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" id="a" />

JavaScript

$(function() { 
//set datepicker or month/year selection
        $('#a').datepicker( {
            changeMonth: true,
            changeYear: true,
            showButtonPanel: true,
            dateFormat: 'MM yy'
        }); 
    
        $("#a").focus(function () {
            $(".ui-datepicker-calendar").hide();
            //add event to perform on done button click
            $(".ui-datepicker-close").click(function(){
                var month = $("#ui-datepicker-div .ui-datepicker-month :selected").val()+1;
            var year = $("#ui-datepicker-div .ui-datepicker-year :selected").val();
                $("#a").datepicker('option', 'defaultDate', new Date(year, month, 1));
            $("#a").datepicker('setDate', new Date(year, month, 1));
            });
        });   
        
});