jQuery addClass example
Change class name on click in jQuery
HTML
<ul id='test'>
<li>asdas</li>
</ul>
<div id='div' style='display: none;'>
Show if li exist!
</div>
<ul id='test'>
<li>asdas</li>
</ul>
<div id='div' style='display: none;'>
Show if li exist!
</div>