JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.10.3/moment.min.js"></script>
<script src="&lt;link rel=&quot;stylesheet&quot; href=&quot;http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css&quot; /&gt;"></script>
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
<link rel="stylesheet" href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css" />
<div class="form-group">
		      <label class="control-label col-sm-2" for="stage" id="doc1"><b>(b)</b>Date of last Calving:</label>
      		<div class="col-sm-4">
				<input type="text" name="doc" id="doc2" placeholder="DD-MM-YYYY" class="form-control" onkeypress="return false">
            </div>
            </div>
<div class="form-group" id="doi">
                <label class="control-label col-sm-2" for="stage" ><b>(e)</b>Date of last Insemination:</label>
      		<div class="col-sm-4">
				<input type="text" name="doi" class="form-control" id="doi4" placeholder="DD-MM-YYYY" onkeypress="return false">
            </div>
            </div>

JavaScript

$(document).ready(function () {
    var date = new Date();
    var currentMonth = date.getMonth();
    var currentDate = date.getDate();
    var currentYear = date.getFullYear();
	var changedYear = date.getFullYear()-2;
    $('#doc2').datepicker({
        minDate: new Date(changedYear, currentMonth, currentDate),
		maxDate: new Date(currentYear,currentMonth,currentDate),
        dateFormat: 'dd-mm-yy',
		changeMonth: true,
        changeYear: true,
		constrainInput: true
    });
});
$(document).ready(function () {

	var date = new Date();
	var cDate=$('#doc2').val();
  alert(cDate);
	cDate.setDate(cDate.getDate()+45);
	var date=new Date(cDate);
	var currentMonth = date.getMonth();
    var currentDate = date.getDate();
	var changedDate = date.getDate()-270;
    var currentYear = date.getFullYear();
	
    $('#doi4').datepicker({
	
        minDate: new Date(currentYear, currentMonth, changedDate),
        maxDate: new Date(currentYear,currentMonth,currentDate),
        dateFormat: 'dd-mm-yy',
		changeMonth: true,
        changeYear: true,
		constrainInput: true
    });
});