Inserting a variable into jQuery .css
<p>I have a JavaScript Variable that stores the width of an element ,called popupWidth, in px, e.g. '200px'. The '' are part of the variable, because jQuery needs them.
How can I insert the variable into jQuerys .css?</p>

<pre><code>$(this).css({
   width: + popupWidth,
});
</code></pre>

<p>The code above doesn't work. </p>
