Bootstrap 5 Tabs with Next/Prev Button

Question

How can I add prev/next buttons to bootstrap 5 tabs?

I've tried to use recommended methods for previous versions but the structure must be different. What am I missing here with the jQuery?

$('.btnNext').click(function() {
  $('.nav-tabs > .active').next('li').find('a').trigger('click');
});
$('.btnPrevious').click(function() {
  $('.nav-tabs > .active').prev('li').find('a').trigger('click');
});

<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM" crossorigin="anonymous">
</script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.0/jquery.min.js" integrity="sha512-894YE6QWD5I59HgZOGReFYm4dnWc1Qt5NtvYSaNcOP+u1T9qYdvdihz0PPSiiqn/+/3e7Jo4EaG7TubfWGUrMQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>

<!-- Nav tabs -->
<ul class="nav nav-tabs">
  <li class="nav-item">
    <a class="nav-link active" data-bs-toggle="tab" href="#home">Home</a>
  </li>
  <li class="nav-item">
    <a class="nav-link" data-bs-toggle="tab" href="#menu1">Menu 1</a>
  </li>
  <li class="nav-item">
    <a class="nav-link" data-bs-toggle="tab" href="#menu2">Menu 2</a>
  </li>
</ul>

<!-- Tab panes -->
<div class="tab-content">
  <div class="tab-pane container active" id="home">
    <h1>Home</h1>
    <a class="btn btn-primary btnNext">Next</a>

  </div>
  <div class="tab-pane container fade" id="menu1">
    <h1>Menu 1</h1>
    <a class="btn btn-primary btnPrevious">Back</a>
    <a class="btn btn-primary btnNext">Next</a>
  </div>
  <div class="tab-pane container fade" id="menu2">
    <h1>Menu 2</h1>
    <a class="btn btn-primary btnPrevious">Back</a>
  </div>
</div>

Answer 1

The main problem is that the active class actually ends up on the anchor element after Bootstrap does its thing, so your child selector wasn't finding it.

Here I'm using Bootstrap's show method rather than a click trigger. It's a bit more inline with Bootstrap's design pattern.

$('.btnNext').click(function() {
  const nextTabLinkEl = $('.nav-tabs .active').closest('li').next('li').find('a')[0];
  const nextTab = new bootstrap.Tab(nextTabLinkEl);
  nextTab.show();
});

$('.btnPrevious').click(function() {
  const prevTabLinkEl = $('.nav-tabs .active').closest('li').prev('li').find('a')[0];
  const prevTab = new bootstrap.Tab(prevTabLinkEl);
  prevTab.show();
});

<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">

<!-- Nav tabs -->
<ul class="nav nav-tabs">
  <li class="nav-item">
    <a class="nav-link active" data-bs-toggle="tab" href="#home">Home</a>
  </li>
  <li class="nav-item">
    <a class="nav-link" data-bs-toggle="tab" href="#menu1">Menu 1</a>
  </li>
  <li class="nav-item">
    <a class="nav-link" data-bs-toggle="tab" href="#menu2">Menu 2</a>
  </li>
</ul>

<!-- Tab panes -->
<div class="tab-content">
  <div class="tab-pane container active" id="home">
    <h1>Home</h1>
    <a class="btn btn-primary btnNext">Next</a>

  </div>
  <div class="tab-pane container fade" id="menu1">
    <h1>Menu 1</h1>
    <a class="btn btn-primary btnPrevious">Back</a>
    <a class="btn btn-primary btnNext">Next</a>
  </div>
  <div class="tab-pane container fade" id="menu2">
    <h1>Menu 2</h1>
    <a class="btn btn-primary btnPrevious">Back</a>
  </div>
</div>

<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM" crossorigin="anonymous">
</script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.0/jquery.min.js" integrity="sha512-894YE6QWD5I59HgZOGReFYm4dnWc1Qt5NtvYSaNcOP+u1T9qYdvdihz0PPSiiqn/+/3e7Jo4EaG7TubfWGUrMQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>