JSFiddle - React, Tailwind, and code Playground

HTML

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

JavaScript

$(document).ready(function() {

  $('#txtDate').blur(function() {

      if(validateDate('txtDate'))

      {

          alert('Date is valid');

      }

      else

      {

          alert('Invalid Date!!!');
      }

   });
});