title: How do I set up JSONP?
body: <p>What do I need to on the server side to allow someone to get data from that server using JSONP. And what do I need to do on the user side as well? I want to use JSONP as an alternative to an XMLHttpRequest. </p>
  
  <p>It won't work out of my Firefox extension, because of the same-origin policy. So, people recommended JSON, but I am pretty lost after searching for tutorials and guides on the internet.</p>
  
  <p>Thanks for the help!</p>