JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.3.2/js/tether.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/tether/1.3.2/css/tether.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha/css/bootstrap.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha/js/bootstrap.js"></script>
<button type="button" class="btn btn-default" data-toggle="popover" title="Popover title" data-content="123">Click to toggle popover</button>

JavaScript

$(function() {
  $('[data-toggle="popover"]').popover();
});