title: Response JSON object or JSON.stringify?
body: <p>Suppose I want to return JSON content </p>
  
  <pre><code>var content = {
    a: 'foo',
    b: 'bar'
  };
  </code></pre>
  
  <p>What is the best practice to return my JSON data? </p>
  
  <p>A) Return object as is; i.e <code>res.end(content)</code>?</p>
  
  <p>B) <code>JSON.stringify(content)</code> and then call <code>JSON.parse(content)</code> on the client?</p>