CartoDB Infowindow

<!DOCTYPE html>
<html>
  <head>
    <style>
      html, body, #map {
        height: 100%;
        padding: 0;
        margin: 0;
      }
    </style>

</head>
    
  <body>
    <div id="map"></div>
  </body>

<div class="cartodb-popup-content-wrapper">
         <div class="cartodb-popup-content">
           <img style="width: 100%" src="https://rambo.webcindario.com/images/18447755.jpg"></src>
           
           <h4>{{content.data.name}}</h4>
         </div>
       </div>
       <div class="cartodb-popup-tip-container"></div>
    </div>
  </script>

<script src="https://libs.cartocdn.com/cartodb.js/v2/cartodb.js"></script>
  <script>

function main() {

var map = L.map('map', { 
        zoomControl: false,
        center: [0, 0],
        zoom: 3
      })

// add a nice baselayer from mapbox
      L.tileLayer('https://a.tiles.mapbox.com/v3/mapbox.mapbox-streets/{z}/{x}/{y}.png', {
        attribution: 'MapBox'
      }).addTo(map);

cartodb.createLayer(map, 'https://examples-beta.cartodb.com/api/v1/viz/219/viz.json')
       .on('done', function(layer) {

map.addLayer(layer);

layer.infowindow.set('template', $('#infowindow_template').html());

layer.on('featureOver', function(e, pos, latlng, data) {
          console.log(e, pos, latlng, data);
        });

layer.on('error', function(err) {
          console.log('error: ' + err);
        });

}).on('error', function() {
        console.log("some error occurred");
      });

}

window.onload = main;

</script>

</html>

Modified http://libs.cartocdn.com/cartodb.js/v2/cartodb.js to a secure url

https://libs.cartocdn.com/cartodb.js/v2/cartodb.js