Please explain what this jquery code is doing
<p>Html looks like:</p>

<pre><code>&lt;div class="ticker"&gt;
        &lt;div class="news-heading"&gt;Latest News:&lt;/div&gt;
                    &lt;span class="active_ticker"&gt;&lt;a href="#"&gt; 1] Lorem ipsum dolor sit amet, consectetur adipiscing elit.&lt;/a&gt;&lt;/span&gt;
                    &lt;span&gt;&lt;a href="#"&gt;2] Mauris semper mi eget libero venenatis mattis.&lt;/a&gt;&lt;/span&gt;
                    &lt;span&gt;&lt;a href="#"&gt;3] Etiam sit amet enim ante, pulvinar porta sem.&lt;/a&gt;&lt;/span&gt;
                    &lt;span&gt;&lt;a href="#"&gt;4] Fusce sit amet felis at felis posuere tristique id eu nisi.&lt;/a&gt;&lt;/span&gt;
                    &lt;span&gt;&lt;a href="#"&gt;5] Integer et eros augue, at cursus turpis.&lt;/a&gt;&lt;/span&gt;
                    &lt;span&gt;&lt;a href="#"&gt;6] Proin id diam dolor, vitae gravida est.&lt;/a&gt;&lt;/span&gt;

                    &lt;/div&gt;


 var $tickeritem = jQuery(".ticker span");
 $new_ticker_item = $tickeritem.filter(":eq(" + i + ")");
</code></pre>

<p>What is :eq(" + i+ ") doing?</p>
