arithmetics on selected DOM element text
<p>I've got a simple jQuery <code>$("span.value")</code> which select nodes containing text. This text is guaranteed to be an integer. How do I calculate the sum of all selected node's text, and place the sum into another node?</p>

<pre><code>&lt;span class="value"&gt;3&lt;/span&gt;
&lt;span class="value"&gt;4&lt;/span&gt;
&lt;span class="value"&gt;5&lt;/span&gt;
&lt;span class="sum"&gt;?&lt;/span&gt;
</code></pre>
