JSFiddle - React, Tailwind, and code Playground

HTML

<input id="date1" value="" size="30" />
<input id="date2" style="visibility:hidden" value="" />

JavaScript

$(function() {
    var date1 = $('#date1');
    var date2 = $('#date2');
    date1.datepicker({
        defaultDate: "+1w",
        changeMonth: true,
        numberOfMonths: 1,
        onClose: function( selectedDate ) {
            var date = $(this).datepicker("getDate");
            
            date2.datepicker("setDate", date);
            date2.datepicker( "show" );
            
        }
    });
    date2.datepicker({
        defaultDate: "+1w",
        changeMonth: true,
        numberOfMonths: 1,
        onClose: function( selectedDate ) {
            var date = $(this).datepicker("getDate");
            var formattedDate = $.datepicker.formatDate('mm/dd/yy', date);
            
            date1.val(date1.val() + " - " + formattedDate);
        }
    });
});