JSFiddle - React, Tailwind, and code Playground

HTML

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

JavaScript

$(function() {
    $( "#datepicker" ).datepicker({
        changeMonth: true,
	    changeYear: true,
        beforeShow: function() { 
            var t = setTimeout(function() { 
                $(".ui-datepicker-month").replaceWith(
                    "<span class = 'dummy'>Foo</span>");
            },100); 
        }
    });
    
    $("body").on("click",".dummy",function() { 
          var dateString = "01/04/2014";
          $("#datepicker").datepicker("setDate", dateString);
    });
    
});