 class="n">config</span><span class="p">)</span>

<span class="c1">// Set the user ID (for a logged in user) used for cross device personalization</span>
<span class="n">constructorIO</span><span class="o">.</span><span class="n">userID</span> <span class="o">=</span> <span class="s">"abcdefghijk-123"</span>
</code></pre>
<h2 id='4-retrieving-the-clientid-and-sessionid' class='heading'>4. Retrieving the clientID and sessionID</h2>

<p>If you are retrieving results from your backend servers instead of direcl