title: Javascript only detection of "Do not track" settings in IE11
body: <p>I would like to respect the DNT settings in all browsers using only javascript (I don't have server side access to the host server).  I got the following from <a href="https://stackoverflow.com/a/16947583/266960">https://stackoverflow.com/a/16947583/266960</a> </p>
  
  <pre><code>var isDNT = navigator.doNotTrack == "yes" || navigator.doNotTrack == "1" || navigator.msDoNotTrack == "1";
  </code></pre>
  
  <p>This works in all browsers but IE11 (specifically 11.0.9600.16428 run through  [<a href="http://spoon.net/]" rel="nofollow noreferrer">http://spoon.net/]</a>), which does not seem to honour any of the above BOM properties (I tried setting the DNT preference via the Internet Options > Advanced > Security: "Always send a do not track header" and also via Safety > Turn on tracking protection).</p>
  
  <p>Can anyone else confirm this is correct (i.e. a bug in IE11), or suggest a JS only method to detect those settings?</p>
  
  <p>TIA
  Ben</p>