html

<div class="playlist">

      <ul>

              <li class="playing">Sample 1</li>

             <li class="">Sample 2</li>

      </ul>

</div>

Jquery

audiO($playlist.find('li:first-child'));

function audiO(datas){

The result that i want is every time the user click i want the $classStatus to be change

i try to use $ classStatus.val('1'); but the result is the object dont have method of val... 

help me thanks...