title: reusable JQuery ajax GET by passing a variable
body: <p>From the browser, when a user clicks a button or link (out of a large list A to ZZZ), I'm trying to GET an HTML fragment (predefined) back from the server. </p>
  
  <p>1) Whats <strong><em>the most reusable way to perform AJAX GET's instead of coding them all over the place.</em></strong></p>
  
  <p>The list of buttons could grow sequentially.</p>