title: Build an HTML5 game - No Starch
body: <p>I do not understand the || and {} at the end of the first line here. Please could you explain. </p>
  
  <pre><code>var BubbleShoot = window.BubbleShoot || {};
  BubbleShoot.Game = (function($){
  var Game = function(){
  var curBubble;
  </code></pre>