Bootstrap 4 navbar-toggler icon not showing

Question

Visit: https://jsfiddle.net/8tpm4z00/

<div class="container">

  <button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#myNavigation" aria-controls="myNavigation" aria-expanded="false" aria-label="Toggle navigation">
  <span class="navbar-toggler-icon"></span>
  </button>

  <a href="#" class="navbar-brand">KP</a>

  <div class="collapse navbar-collapse" id="myNavigation">
      <div class="navbar-nav">
        <a class="p-3 nav-item nav-link active " href="#">Home</a>
        <a class="p-3 nav-item nav-link " href="#">About</a>
        <a class="p-3 nav-item nav-link " href="#">Contact Me</a>
      </div><!-- <div class="navbar-nav"> -->
  </div><!-- <div class="collapse navbar-collapse"> -->

</div><!-- <div class="container"> -->

.navbar-toggler-icon does not appear on the navigation button toggle button when the menu is minimized for mobile response.

I searched about this issue and also configured jquery and bootstrap links. By placing the jquery link above the bootstrap 4 links. But that doesn't seem to work. External libraries are linked in my HTML in the same order as jsfiddle.

Answer 1

Use navbar-inverse bg-inverseinstead.navbar-default

<section role="navigation">
  <nav class="navbar navbar-inverse bg-inverse navbar-toggleable-sm fixed-top"><!-- navbar-inverse -->

    <div class="container">

      <button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#myNavigation" aria-controls="myNavigation" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
      </button>

      <a href="#" class="navbar-brand">KP</a>

      <div class="collapse navbar-collapse" id="myNavigation">
          <div class="navbar-nav">
            <a class="p-3 nav-item nav-link active " href="#">Home</a>
            <a class="p-3 nav-item nav-link " href="#">About</a>
            <a class="p-3 nav-item nav-link " href="#">Contact Me</a>
          </div><!-- <div class="navbar-nav"> -->
      </div><!-- <div class="collapse navbar-collapse"> -->

    </div><!-- <div class="container"> -->

  </nav>
</section>

Updated violin

---

Update:

navbar-inverseno longer available in version B4, you can use instead navbar-dark.

Answer 2

- Bootstrap 4:

navbar-dark nav.

:

<nav class = "navbar navbar-expand-lg navbar-dark fixed-top navbar-default" role = "navigation">
     <a class="navbar-brand" href="#">
         <img class = "img-responsive logo" src = "~/Content/Images/ogo__160x36.png" alt = "" />
     </a>
     <button type = "button" class = "navbar-toggler" data-toggle = "collapse" data-target = "#menuPrincipal" aria-controls = "navbarNav" aria-expanded = "false" aria-label = "Toggle navigation ">
         <span class = "navbar-toggler-icon"> </ span>
     </button>
     <div class="collapse navbar-collapse" ...>...</div>
</nav>

Answer 3

Use navbar-dark instead of navbar-inverse and bg-dark also instead of bg-inverse

  <nav class="navbar navbar-dark navbar-expand-md bg-dark ">