Adding CSS Class to the Last Selected Paragraph Element using jQuery.

<script src="//code.jquery.com/jquery-1.10.2.js"></script>
<p>vishal</p>
<p>kumar</p>
<p>neeraj</p>
<style>
p 
{
  margin: 8px;
  font-size: 16px;
}

.selected 
{
  color: blue;
}

.highlight 
{
  background: yellow;
}
</style>

//jQuery code here
<script>
$("p").last().addClass("selected");
</script>