title: Nodejs - return a subset of a list such that they contain values in the other list
body: <p>So suppose there are two lists</p>
  <pre><code>var parsedList = ['a','b','c','d']
  var originalList = ['a#','c#','h#']
  </code></pre>
  <p>And I would like to return a subset of originalList which contains values in the parsedList. (e.g. <code>['a#','c#']</code> as 'a' and 'c' is in the parsedList) Is there a simple and elegant way to do this?</p>