title: jsfiddle error {"error": "Please use POST request"} when submitting a form
body: <p>I'm new to using JSfiddle and get this error: <code>{"error": "Please use POST request"}</code> everytime I submit the form. What I have understood, you cannot submit a post request in JSfiddle, so how I can append something to a form?</p>
  
  <pre><code>&lt;form&gt;
    &lt;label&gt;Add&lt;/label&gt;
    &lt;input type="text"/&gt;
  &lt;/form&gt;  
  
  $('form').on("submit", function(){
    $('form').after("apple")
  });
  </code></pre>