title: What is the difference between an ArrayBuffer and a Blob?
body: <p>I'm reading <a href="http://www.html5rocks.com/en/tutorials/file/xhr2/" rel="noreferrer">http://www.html5rocks.com/en/tutorials/file/xhr2/</a> and trying to figure out the difference between an <code>ArrayBuffer</code> and a <code>Blob</code>.</p>
  <p>Aren't both containers comprised of bits? Hence, couldn't both containers be viewed in many ways (as 32-bit chunks, 16-bit chunks, etc.)?</p>