title: jQuery Object array notation
body: <p>I'm new to jQuery, and I'm having a little trouble understanding its array notation for objects. Reading the jQuery docs and <a href="https://stackoverflow.com/questions/2445599/jquery-object-as-a-array-id0">this article</a>, it seems that you can refer to the nth item in an object returned by a selector by doing something like</p>
  
  <pre><code>$('.foo')[n];
  </code></pre>
  
  <p>Correct?
  Should I be able to use jQuery manipulation/effects functions in tandem? Something like (this isn't working for me)</p>
  
  <pre><code>$('.foo')[0].hide();
  </code></pre>
  
  <p>I've also tried, to no avail:</p>
  
  <pre><code>var arr = $('.foo').get();
  arr[0].hide();
  </code></pre>
  
  <p>Is there something wrong in my syntax? What's the best way to do what I'm trying to do here?</p>
  
  <p>Thanks!</p>