JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-1.11.2.min.js"></script>
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.1/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.4.0/css/font-awesome.min.css">
<script src="https://code.jquery.com/ui/1.11.4/jquery-ui.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.4/jquery-ui.css">
<div class="mytemplate" style="display: none;">
    <input class="datepicker" type="text" name="name[]"/>
</div>
<div class="dates">
    <div>
        <input class="datepicker" type="text" name="name[]"/>
    </div>
</div>
<input type="button" class="addmore" value="Add more">

JavaScript

$(document).ready(function() {
    $('.addmore').on('click', function() {
        $(".mytemplate").clone().removeClass("mytemplate").show().appendTo(".dates");
    });
    $(document).on("focus", ".datepicker", function(){
        $(this).datepicker();
    });
});