Bootstrap navbar collapse button not showing - html

Question

I'm making an application with bootstrap and I have a nav bar, however for some reason when I resize the page the links disappear but the toggle button doesn't show.
Here is my nav bar:
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.0/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.0/js/bootstrap.min.js"></script>
<nav class="navbar navbar-default">
<div class="container-fluid">
<div class="navbar-header">
<div class="navbar-brand">title</div>
</div>
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav navbar-right">
<li>one</li>
<li>two</li>
<li>three</li>
<li>four</li>
</ul>
</div>
</nav>
Any help to fix this would be greatly appreciated.

Answer 1

You don't currently have the toggle button in your code. Try placing the following before your collapse, and after your navbar-header:
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#myNavbar">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
http://www.w3schools.com/bootstrap/bootstrap_navbar.asp
<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<nav class="navbar navbar-inverse">
<div class="container-fluid">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#myNavbar">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">WebSiteName</a>
</div>
<div class="collapse navbar-collapse" id="myNavbar">
<ul class="nav navbar-nav">
<li class="active">Home</li>
<li class="dropdown">
<a class="dropdown-toggle" data-toggle="dropdown" href="#">Page 1 <span class="caret"></span></a>
<ul class="dropdown-menu">
<li>Page 1-1</li>
<li>Page 1-2</li>
<li>Page 1-3</li>
</ul>
</li>
<li>Page 2</li>
<li>Page 3</li>
</ul>
<ul class="nav navbar-nav navbar-right">
<li><span class="glyphicon glyphicon-user"></span> Sign Up</li>
<li><span class="glyphicon glyphicon-log-in"></span> Login</li>
</ul>
</div>
</div>
</nav>
<div class="container">
<h3>Collapsible Navbar</h3>
<p>In this example, the navigation bar is hidden on small screens and replaced by a button in the top right corner (try to re-size this window).
<p>Only when the button is clicked, the navigation bar will be displayed.</p>
</div>

Answer 2

you havent added a toggle button as i can see in your code
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<div class="navbar-brand">title</div>
</div>
For more details refer Navbar documentation (bootstrap)

Answer 3

in my case I am using bootstrap5 but class I was using old version, after changing code as below it worked for me by going though BS5 W2Schools:
<nav class="navbar navbar-expand-sm bg-dark">
<div class="container-fluid">
Recipe Book
<ul class="nav navbar-nav">
<li class="nav-item" routerLinkActive="active">
<a class="nav-link" routerLink="/recipes">Recipes</a>
</li>
<li class="nav-item" routerLinkActive="active">
<a class="nav-link" routerLink="/shopping-list">Shopping List</a>
</li>
</ul>
<ul class="nav navbar-nav navbar-right">
<li class="nav-item dropdown" appDropdown>
<a class="nav-link dropdown-toggle" href="#" role="button" data-bs-toggle="dropdown">Manage<span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a class="dropdown-item" href="#">Save Data</a></li>
<li><a class="dropdown-item" href="#">Fetch Data</a></li>
</ul>
</li>
</ul>
</div>
</nav>
referece:https://www.w3schools.com/bootstrap5/tryit.asp?filename=trybs_navbar_dropdown&stacked=h