title: Nodejs difference between 'res.json(..)' and 'return res.json(..)'
body: <p>I am learning <code>Nodejs</code> and I do not fully understand the returns. For example, <code>next()</code> in many cases is suggested to be returned in order to make sure execution stop after triggering it (<a href="https://stackoverflow.com/questions/16810449/when-to-use-next-and-return-next-in-node-js">Reference</a>). However, for cases like simple response, is <code>return</code> needed, what is the difference and what is preferred:</p>
  
  <pre><code>res.json({ message: 'Invalid access token' });
  </code></pre>
  
  <p>vs. </p>
  
  <pre><code>return res.json({ message: 'Invalid access token' });
  </code></pre>