title: how to schedule ajax calls every N seconds?
body: <p>If I want a whole page to reload every N seconds, I would put something like this in the HTML:
  <code>meta http-equiv="refresh" content="5" </code></p>
  
  <p>Is there a standard practice for doing the same kind of thing for AJAX calls? I want schedule an AJAX call to go off every 10 seconds say, in order to update parts of the page, without refreshing the whole page. It would be even better if I could schedule multiple AJAX calls at different times, as some parts of the page may need to be updated more often than others.</p>
  
  <p>TIA </p>