Html code
<ul class="nav tabs">
<li class="active" id="li1">Item1 </li>
<li class="" id="li2"> Item2 </li>
<li class="disabled" id="li3"> Item3 </li>
<%--already disable--%>
<li class="" id="li4"> Item4 </li>
<li class="" id="li5"> Item5 </li>
</ul> jquery code$("#li2").addClass("disabled");// for 2nd li disable
$("#li3").removeClass("disabled");// for 3rd li enable