var url = window.location; $('.menu a[href="'+url+'"]').addClass('current');
ul{margin:25px;} .current{color:red;}
<ul class="menu"> <li><a href="javascript:void(0);">list 01</a></li> <li><a href="http://fiddle.jshell.net/kachibito/ZVWUh/6/show/light/">list 02</a></li> <li><a href="javascript:void(0);">list 03</a></li> <li><a href="javascript:void(0);">list 04</a></li> </ul>