title: Allow javascript in php form and avoid hacking like JsFiddle
body: <p>I have a membership website where users can embed their own code into their profile.  I would like to allow them to include embed codes on their profile such as YouTube and Javascript embed codes.</p>
  
  <p>I noticed JsFiddle.net can do this. Does anybody know how to duplicate this security?</p>
  
  <p>Thank you for any help!</p>