title: how to extract data from getJson?
body: <p>How to extract the contents of "data" and load them inside form inputs ?
  the situation is like this, I have a data displayed, it's being pulled out from
  a database table. now on that displayed data, I placed an "edit" link. now my problem is,
  how to use this json thing, in order for me to be able to load the data of the 
  clicked/to be edited data in the input forms ?</p>
  
  <pre><code>  $(function() {  
  
      //retrieve comments to display on page  
      $.getJSON("testfile.php?jsoncallback=?", function(data) {  
  
          //what to code here?
      });  
    }); 
  </code></pre>