title: How to build the "data" section of an $.ajax method in jQuery dynamically
body: <p>I'm trying to build a reusable $.ajax method for my current application but I'm struggling to find solid information about how to build the <b>data:</b> section dynamically ...</p>
  
  <p>Currently I'm looking at something similar to the function below, but I'm not sure how to implement this w/ jQuery 1.3.x (or if this type of thing was moved into the core?)</p>
  
  <pre><code>var extraParams = {
      timestamp: +new Date()
  };
  
  $.each(options.extraParams, function (key, param) {
      extraParams[key] = typeof param == "function" ? param() : param;
  });
  </code></pre>