Bootstrap navbar collapse button not showing

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 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 2

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"><a href="#">Home</a></li> <li class="dropdown"> <a class="dropdown-toggle" data-toggle="dropdown" href="#">Page 1 <span class="caret"></span></a> <ul class="dropdown-menu"> <li><a href="#">Page 1-1</a></li> <li><a href="#">Page 1-2</a></li> <li><a href="#">Page 1-3</a></li> </ul> </li> <li><a href="#">Page 2</a></li> <li><a href="#">Page 3</a></li> </ul> <ul class="nav navbar-nav navbar-right"> <li><a href="#"><span class="glyphicon glyphicon-user"></span> Sign Up</a></li> <li><a href="#"><span class="glyphicon glyphicon-log-in"></span> Login</a></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 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">
        <a href="#" class="navbar-brand">Recipe Book</a>
        <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