title: jQuery $(this) selector function and limitations
body: <p>I need help understanding <code>$(this)</code>. Is it possible to narrow the focus of &quot;this&quot; within the parentheses or does &quot;this&quot; preclude the use of any other attributes?</p>
  <p>For example: I don't understand why this code:</p>
  <pre><code>$(this).children(&quot;div&quot;)
  </code></pre>
  <p>can't be rewritten like this:</p>
  <pre><code>$(this + &quot; div&quot;)
  </code></pre>
  <p>without having to resort to something like:</p>
  <pre><code>$('#'+$(this).attr(&quot;id&quot;)+ &quot; div&quot;)
  </code></pre>
  <p>Also, can you point me to 'this' in the jQuery documentation? It is difficult to use 'this' as a search term for obvious reasons.</p>