Parent child selectors
by meatHucker
HTML
<ul>
<li>Item 1</li>
<li>Item 2
<ul class="nestedNav">
<li>Nested item 1</li>
<li>Nested item 2</li>
<li>Nested item 3</li>
</ul>
</li>
<li>Item 3</li>
</ul>
JavaScript
$( "li", ".nestedNav" ).css( "border", "1px solid red" );