Javascript- How to Set a Cookie based on url Parameter
<p>URL:
<a href="http://example.com/?a=1&amp;b=2&amp;c=3?reco_id=xxxx" rel="nofollow noreferrer">http://example.com/?a=1&amp;b=2&amp;c=3?reco_id=xxxx</a></p>

<p>xxxx is the actual value (transaction number).</p>

<ol>
<li>set a cookie "xxxx"</li>
<li>move oder page > call "reco_id"</li>
</ol>