<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script> <script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script> <!------ Include the above in your HEAD tag ----------> <div id="navs"> <ul> <li><a class="active" href="#">ABOUT</a></li> <li><a href="#">EVENTS</a></li> <li><a href="#">REVIEWS</a></li> <li><a href="#">CONTACT</a></li> </ul> </div>

.active { text-decoration: underline; } ul { list-style-type: none; } a.active { color:red; } a.active { color:black; }

$('#navs li a').on('click', function(){ $('li a.active').removeClass('active'); $(this).addClass('active'); });