title: JavaScript- convert array buffer to string
body: <p>Title says it all.
  I have a jquery serialized data that looks like this:</p>
  
  <pre><code>tarid=value&amp;tarname=value&amp;sel=3
  </code></pre>
  
  <p>And I want to convert it to ArrayBuffer.
  After that, I also need to turn it back to its original form again.
  So how can I do that?</p>