title: How to output Buffer content completely with console.log
body: <p>In <code>nodejs</code></p>
  
  <pre><code>console.log(new Buffer(12))
  </code></pre>
  
  <p>show</p>
  
  <pre><code>&lt; Buffer 00 22 33 11 55 ...&gt;
  </code></pre>
  
  <p>We know the <code>...</code> ignore the following bytes. Now I want to output the whole buffer with 12 bytes, what should I do?</p>