jQuery addClass example
Change class name on click in jQuery
by joshmoto
HTML
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.2/css/bootstrap.min.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.2/js/bootstrap.min.js"></script>
<nav class="navbar navbar-expand navbar-light bg-light">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNav">
<ul class="navbar-nav">
<li class="nav-item active">
<a class="nav-link" href="//jsfiddle.net/joshmoto/2hoL3rm8/3/show/light/?page=home">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="//jsfiddle.net/joshmoto/2hoL3rm8/3/show/light/?page=about">About</a>
</li>
</ul>
</div>
</nav>