title: Why can't functions be assigned to variables and keep their functionality?
body: <p>This works: </p>
  
  <pre><code>var foo = $("#bar");
  foo.html("Hello.");
  </code></pre>
  
  <p>This doesn't:  </p>
  
  <pre><code>var foo = $("#bar").html;
  foo("Hello.");
  </code></pre>
  
  <p>What breaks the functionality?</p>