title: jQuery Call a function when content of a div changes
body: <p>I have a span:</p>
  
  <pre><code>&lt;span class="basket_amount"&gt;65.70&lt;/span&gt;
  </code></pre>
  
  <p>This span is updated via an external script. 
  If the amount changes I want to trigger a javascript function.</p>
  
  <pre><code>$(document).ready(function(){
      $('.basket_amount').on('change', function() {
          versandkosten();
      });  
  });
  </code></pre>
  
  <p>Currently it does not work. But why?</p>
  
  <p>Thanks a lot!</p>