title: Filter is not a function?
body: <p>Im attempting to return an array of my list items if they contain the text "Flexbox" in them. </p>
  
  <p>Im getting this error: <code>Uncaught TypeError: items.filter is not a function</code></p>
  
  <pre><code>    &lt;ul&gt;
          &lt;li data-time="5:10"&gt;Flexbox 1&lt;/li&gt;
          &lt;li data-time="5:10"&gt;Something else&lt;/li&gt;
          &lt;li data-time="5:40"&gt;Flexbox 2&lt;/li&gt;
          &lt;li data-time="5:10"&gt;Something also else&lt;/li&gt;
          &lt;li data-time="5:40"&gt;More Flexbox for you&lt;/li&gt;
      &lt;/ul&gt;
  
  
  'use strict';
  
  var items = document.querySelectorAll('li');
  
  var itemsFlex = items.filter(function(item) {
      return item.includes('Flexbox')
  });
  
  console.log(itemsFlex);
  </code></pre>