bootstrap js inden önce jquery ekleyin
hocam eklemem de sıkıntı yok ama bunların content leri nasıl ekleniyor hiç bilgi verilmemiş yada ben göremedim yani tıkladığım tabın içeriğini nasıl gösteriyoruz
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap Example</title>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
</head>
<nav class="nav nav-pills nav-justified">
<a class="nav-link active" href="#">Active</a>
<a class="nav-link" href="#">Longer nav link</a>
<a class="nav-link" href="#">Link</a>
<a class="nav-link disabled" href="#">Disabled</a>
</nav>
</body>
</html>