How can I get query string values on a AMP site?
<p>Is there a way to retrieve query string values from an AMP-HTML Site and store them in a cookie or use them in a link?</p>

<p>Example:</p>

<ol>
<li>User clicks on an ad <code>www.example.com/amp?foo=bar</code></li>
<li>Open the AMP Site</li>
<li>Click on a link and come to the checkout - not AMP <code>www.example.com/checkout?foo=bar</code></li>
</ol>