JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-2.1.4.min.js"></script>
<button id="removeContact" class="btn btn-box-tool">-</button>
<button id="addContact" class="btn btn-box-tool">+</button>
<div id="contactWrapper">
    <div id="contactInputs">111</div>
</div>

JavaScript

$('#addContact').click(function () {
	    $("#contactInputs").clone().appendTo("#contactWrapper");
	    return false;
	});

	$('#removeContact').click(function () {
	    var div = $("#contactWrapper > #contactInputs");
	    if (div.length > 1) 
            div.last().remove();
	    return false;
	});