JSFiddle - React, Tailwind, and code Playground

HTML

<div id="child">
	<div class="child">
    <input type="text" class="myclass" name="tdate" />
    <input type="text" class="myclass" name="fdate" />
	</div>
	<button type="button" id="mybtn">Add another child</button>
</div>

JavaScript

$('#mybtn').click(function() {  
        var clone = $('.child:first').clone(true).appendTo('#child');
	    clone.find('.myclass').datepicker();
    });