Demo -jQuery

by Avinash_R

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/base/jquery-ui.css">
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5/jquery.min.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/jquery-ui.min.js"></script>
<div>
    <button class="A">1</button>
    <button class="B">2</button>
    <button class="A">3</button>
    <button class="B">4</button>
</div>
<div>
    <button class="A">1</button>
    <button class="B">2</button>
    <button class="A">3</button>
    <button class="B">4</button>
</div>
<div>
    <button class="A">1</button>
    <button class="B">2</button>
    <button class="A">3</button>
    <button class="B">4</button>
</div>

JavaScript

console.log($('div:nth-child(2)').find(' > button:nth-child(2)'));