javascript - Slick Slider zero width in hidden container (Bootstrap tab)

Question

I'm using a Bootstrap 4 tab navigation to view different sliders inside the tab panels.

It works well for the active tab. But the sliders in the inactive tabs have an width of 0 (.slide-track). So there is a display problem until I'm start to navigate through the tabs. After that, the width is set and the slider looks fine.

Is there any way to set the width of the slide track to the correct size?

$('.slider-home').slick({
  dots: true,
  arrows: true,
});

$('.slider-profile').slick({
  dots: true,
  arrows: true,
});

$('.slider-contact').slick({
  dots: true,
  arrows: true,
});

.slick-prev:before,
.slick-next:before {
  color: blue;
}

.tab-pane {
  padding: 2rem 0;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"></script>
<script src="http://cdn.jsdelivr.net/jquery.slick/1.3.15/slick.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet" />
<link href="http://cdn.jsdelivr.net/jquery.slick/1.3.15/slick.css" rel="stylesheet" />
<link href="https://kenwheeler.github.io/slick/slick/slick-theme.css" rel="stylesheet" />

<div class="container">
  <ul class="nav nav-tabs" id="myTab" role="tablist">
    <li class="nav-item"><a class="nav-link active" id="home-tab" data-toggle="tab" href="#home" role="tab" aria-controls="home" aria-selected="true">Home</a></li>
    <li class="nav-item"><a class="nav-link" id="profile-tab" data-toggle="tab" href="#profile" role="tab" aria-controls="profile" aria-selected="false">Profile</a></li>
    <li class="nav-item"><a class="nav-link" id="contact-tab" data-toggle="tab" href="#contact" role="tab" aria-controls="contact" aria-selected="false">Contact</a></li>
  </ul>
  <div class="tab-content" id="myTabContent">
    <div class="tab-pane fade show active" id="home" role="tabpanel" aria-labelledby="home-tab">
      <div class="slider-home">
        <div>
          <p class="h1">home 1</p>
        </div>
        <div>
          <p class="h1">home 2</p>
        </div>
        <div>
          <p class="h1">home 3</p>
        </div>
        <div>
          <p class="h1">home 4</p>
        </div>
      </div>
    </div>
    <div class="tab-pane fade" id="profile" role="tabpanel" aria-labelledby="profile-tab">
      <div class="slider-profile">
        <div>
          <p class="h1">profile 1</p>
        </div>
        <div>
          <p class="h1">profile 2</p>
        </div>
        <div>
          <p class="h1">profile 3</p>
        </div>
        <div>
          <p class="h1">profile 4</p>
        </div>
        <div>
          <p class="h1">profile 5</p>
        </div>
      </div>
    </div>
    <div class="tab-pane fade" id="contact" role="tabpanel" aria-labelledby="contact-tab">
      <div class="slider-contact">
        <div>
          <p class="h1">contact 1</p>
        </div>
        <div>
          <p class="h1">contact 2</p>
        </div>
        <div>
          <p class="h1">contact 3</p>
        </div>
      </div>
    </div>
  </div>
</div>

Answer 1

The problem is because when a container is hidden it's not possible for its child elements to calculate their widths.

To get around this you could instead instantiate the slick() controls when the tabs are shown. Then the widths can be calculated. Try this:

$('a[data-toggle="tab"]').on('shown.bs.tab', function() {   
  $($(this).attr('href')).find('.slider').slick({
    dots: true,
    arrows: true
  })
}).first().trigger('shown.bs.tab');

Working example