title: How to convert a jquery object to JSON string OR how to save a specific element in a string?
body: <p>I added a click event to all elements on the page and now want to send the clicked target element to a server.
  If the clicked element has an ID, then I can just send the ID, but if the element doesn't have an ID, class, name, ... , then how can I send an identifier (or selector) to the server which points to this exact element?</p>
  
  <p>I tried sending the jquery.target object itself. However, this results in a 
  "Uncaught TypeError: Converting circular structure to JSON"
  error.</p>
  
  <p>Is there a way to serialize a jquery object or to create a selector based on the current element?</p>