Adding classes for items inside wrap
<p>I have this code:</p>

<pre><code>$(".feed-item .field-content p").each(function(i) {
    $(this).addClass("item" + (i+1));
});
</code></pre>

<p>This code help me to add classes in paragraph inside this markup:</p>

<pre><code>&lt;div class="feed-item"&gt;
  &lt;div class="field-content"&gt;
    &lt;p&gt;This must be class item1&lt;/p&gt;
    &lt;p&gt;This must be class item2&lt;/p&gt;
  &lt;/div&gt;
&lt;/div&gt;
&lt;div class="feed-item"&gt;
  &lt;div class="field-content"&gt;
    &lt;p&gt;This must be class item1&lt;/p&gt;
    &lt;p&gt;This must be class item2&lt;/p&gt;
  &lt;/div&gt;
&lt;/div&gt;
</code></pre>

<p>But I need that always the count start on number 1. Have I explained well? Now I get this result:</p>

<pre><code>&lt;div class="feed-item"&gt;
  &lt;div class="field-content"&gt;
    &lt;p class="item1"&gt;This must be class item1&lt;/p&gt;
    &lt;p class="item2"&gt;This must be class item2&lt;/p&gt;
  &lt;/div&gt;
&lt;/div&gt;
&lt;div class="feed-item"&gt;
  &lt;div class="field-content"&gt;
    &lt;p class="item3"&gt;This must be class item1&lt;/p&gt;
    &lt;p class="item4"&gt;This must be class item2&lt;/p&gt;
  &lt;/div&gt;
&lt;/div&gt;
</code></pre>

<p>And this is that I needed (note the difference is in the class associated with the p tags in the second field-content div):</p>

<pre><code>&lt;div class="feed-item"&gt;
  &lt;div class="field-content"&gt;
    &lt;p class="item1"&gt;This must be class item1&lt;/p&gt;
    &lt;p class="item2"&gt;This must be class item2&lt;/p&gt;
  &lt;/div&gt;
&lt;/div&gt;
&lt;div class="feed-item"&gt;
  &lt;div class="field-content"&gt;
    &lt;p class="item1"&gt;This must be class item1&lt;/p&gt;
    &lt;p class="item2"&gt;This must be class item2&lt;/p&gt;
  &lt;/div&gt;
&lt;/div&gt;
</code></pre>

<p>I'm working on this link: <a href="http://jsfiddle.net/bosspetta/RJkP5/" rel="nofollow">http://jsfiddle.net/bosspetta/RJkP5/</a></p>
