title: jQuery $[data] variable
body: <p>I am very new to JavaScript. I was reading the source code of deck.js and found there a variable referred to as $[data].  What does this exactly mean?  I know that it refers to a jQuery variable because of the $ but what kind of a variable is it?  Is it an array of length data?</p>
  
  <p>Thanks in advance,
  kop</p>