JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" id="datepicker"/>
<input type="text" id="secondDate"/>

JavaScript

$(function() {
    $( "#datepicker" ).datepicker({ dateFormat: "dd-mm-yy" });
    $( "#secondDate" ).datepicker({ dateFormat: "dd-mm-yy" });
    
    $("#datepicker").datepicker('setDate', '10-03-2020');
    $("#secondDate").datepicker('setDate', $("#datepicker").datepicker('getDate'));
});