title: Jquery Migrate CDN fallback condition
body: <p>To increase page speed am using Google CDN to download jquery file and I also have fall back to download jquery from local incase Google CDN fails.</p>
  
  <p>Below is how am using fallback</p>
  
  <pre><code>&lt;script type="text/javascript" src="http://ajax.microsoft.com/ajax/jquery/jquery-1.9.1.min.js"&gt;&lt;/script&gt;
  &lt;script type="text/javascript"&gt;
  if (typeof jQuery == 'undefined') {
      document.write(unescape("%3Cscript src='common/script/jquery-1.9.1.min.js' type='text/javascript'%3E%3C/script%3E"));
  }
  
  &lt;/script&gt;
  </code></pre>
  
  <p>Above code works perfect, my question is how to check if jquery migrate file is loaded or not?</p>
  
  <p>All I need is to check if <a href="http://code.jquery.com/jquery-migrate-1.1.0.js">http://code.jquery.com/jquery-migrate-1.1.0.js</a> is loaded or not. I hope if (typeof jQuery == 'undefined') {} this wont work here.</p>
  
  <p>Any solutions</p>