Pass concatenated string to server with AJAX
<p>I don't know how to end this line of code:</p>

<pre><code>xhttp.open("GET", "server.php?width=" + w + "&amp;height=" + h ???, true);
</code></pre>

<p>I guess there must be a <code>"</code> at the question marks, but how do I end it? I tried all kinds of combinations, but non of them works?</p>