title: Modifying Facebook share content with JavaScript
body: <p>I've been successfully using the <a href="http://sharrre.com" rel="nofollow">Sharrre</a> plugin to add a Facebook share button to a page but I now need to change the title and description of the shared link.</p>
  
  <p>I believe this was possible in the past before Facebook updated sharer.php, with the new version no longer accepting parameters for title, etc.
  I can change the og:title attribute content via JavaScript but when Facebook requests the page these changes are (obviously) not present.</p>
  
  <p>How are sites like Buzzfeed accomplishing this with their quizzes, where the outcome is shared?</p>