title: typeof and instanceof operators returns different information for the same var
body: <p>Observe the following lines of JavaScript code:</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
     &lt;head&gt;
        &lt;title&gt;typeof vs instanceof&lt;/title&gt;
     &lt;/head&gt;
     &lt;body&gt;
        &lt;script type="text/javascript"&gt;
  
  var myString = "MyString";
  alert( typeof myString );
  alert( myString instanceof String );
  
        &lt;/script&gt;
     &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>The first alert say <code>string</code> (in lower case) when the second say <code>false</code>...</p>
  
  <p>Why?</p>