[jQuery] example on site, have question

[Andy]

I'm trying to figure out how this works.  It appears it is re-
iterating the click function in this call.  Why would this work?  I
don't see how I would know to create the method this way if I was
going to recreate this.

  $(document).ready(function(){

         $(document.body).click(function () {
             $(document.body).append($("<div>"));
                 var n = $("div").size();
                 $("span").text("There are " + n + " divs." + "Click to add
more.");
              }).click(); // trigger the click to start
                 });