title: How do I parse JSON with getJSON.
body: <p>how to read the url <a href="http://api.twitter.com/1/statuses/21947795900469248/retweeted_by.json" rel="nofollow">http://api.twitter.com/1/statuses/21947795900469248/retweeted_by.json</a> using ajax.</p>
  
  <p>I tried this but not working.</p>
  
  <pre><code>var jqxhr = $.getJSON(url, function() {
        alert(jqxhr);
  })
  </code></pre>
  
  <p>I want to read all the screen_name from the json data using the jquery?</p>