title: Missing background image placeholder
body: <p>Although there seems to be plenty of answers regarding broken <code>&lt;img&gt;</code> handling to show replacement images when the original could not be loaded, I can't seem to find a solution regarding missing background-images.</p>
  
  <p><strong>Question:</strong> How can I show another background-image if the original background-image was not loaded?</p>
  
  <p>I apply the background-images like this:</p>
  
  <pre><code>&lt;div style="background-image: url('img/test.jpg');"&gt;&lt;/div&gt;
  </code></pre>