JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://libs.cartocdn.com/cartodb.js/v3/themes/css/cartodb.css">
<script src="https://code.jquery.com/jquery-2.1.4.min.js"></script>
<script src="http://libs.cartocdn.com/cartodb.js/v3/cartodb.js"></script>
<div id="map"></div>
<script type="infowindow/html" id="infowindow_template">
  <div class="cartodb-popup">
    <a href="#close" class="cartodb-popup-close-button close">x</a>
    <div class="cartodb-popup-content-wrapper">
      <div class="cartodb-popup-content">
        <h4>cartodb_id: </h4>
        <p id="cartodb_id">{{content.data.cartodb_id}}</p>
        <input type="submit" id="clickme" value="clickme" />
      </div>
    </div>
    <div class="cartodb-popup-tip-container"></div>
  </div>
</script>

CSS

html,
body,
#map {
  height: 100%;
  width: 100%;
  padding: 0;
  margin: 0;
}

JavaScript

var map = new L.Map('map', {
  center: [39.115941, -105.763576]
});

map.fitBounds([
  [37.004128, -109.053447],
  [41.016427, -102.015180]
]);


var layer = L.tileLayer('https://api.tiles.mapbox.com/v4/{id}/{z}/{x}/{y}.png?access_token={accessToken}', {
  id: 'willcarter.cigctwbwf0dqgt9kq4geyzag4',
  accessToken: 'pk.eyJ1Ijoid2lsbGNhcnRlciIsImEiOiJjaWdjdHdkNzYwZGp3dTVtMGhhY2ZkaDloIn0.9qTtVfFnKXVe82B-6mJbqQ'
}).addTo(map);

cartodb.createLayer(map, {
    user_name: 'coloradooilandgas',
    type: 'cartodb',
    sublayers: [{
      sql: ' select * from co_wells_1898_2015 where year = 1950',
      cartocss: "#co_wells_1898_2015 {marker-fill: #EA4335; marker-width: 5; }",
      interactivity: 'cartodb_id'
    }]
  })
  .addTo(map)
  .done(function(layer) {
     sublayer = layer.getSubLayer(0);

    cartodb.vis.Vis.addInfowindow(map, sublayer,
          ['cartodb_id'], {
          infowindowTemplate: $('#infowindow_template').html(),
          templateType: 'mustache'
      });
      
      // Why isn't this working?
      $('body').on('click', "#clickme", function() {
      	alert('clicked!', $('#cartodb_id').text());
      });
      
  })
  .error(function(err) {
    console.log("error: " + err);
  });