Tips for achieving a seamless transition between elements of varying heights in your Bootstrap carousel

I'm currently working on a Bootstrap carousel project with slides of varying heights. The transition animation between slides is quite choppy due to the different sizes of content. I'm looking for a solution to make the transition smoother and more graceful while keeping the varied heights intact as they are essential to the project.

*Please, keep in mind that maintaining the different slide heights is crucial for the project's overall design.

You can see an example of the choppy transition on JS Bin.

Below is the code snippet for the carousel:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>Bootstrap Carousel</title>
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
  </head>
<body>

<div id="carousel-example-generic" class="carousel slide" data-ride="carousel">
  <ol class="carousel-indicators">
    <li data-target="#carousel-example-generic" data-slide-to="0" class="active"></li>
    <li data-target="#carousel-example-generic" data-slide-to="1"></li>
    <li data-target="#carousel-example-generic" data-slide-to="2"></li>
  </ol>

  <div class="carousel-inner" role="listbox">
    <div class="item active">
      <img style="margin: 0 auto;" src="http://placehold.it/300x300">
    </div>
    <div class="item">
      <img style="margin: 0 auto;" src="http://placehold.it/250x250">
    </div>
    <div class="item">
      <img style="margin: 0 auto;" src="http://placehold.it/160x600">
    </div>
  </div>

      <a class="left carousel-control" href="#carousel-example-generic" role="button" data-slide="prev">
    <span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>
    <span class="sr-only">Previous</span>
  </a>
  <a class="right carousel-control" href="#carousel-example-generic" role="button" data-slide="next">
    <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
    <span class="sr-only">Next</span>
  </a>
</div>

</body>
</html>
javascriptcsstwitter-bootstrapcarousel

Answer №1

Due to the translation movement from left to right, the image carousel was experiencing a lot of chopping. By removing this translation, the performance should improve significantly.

.carousel-inner .item {
  opacity: 0;
  transition: none;
  transform: translate3d(0,0,0) !important;
}

.carousel-inner .active {
  transition: opacity 1s ease-in-out;
  opacity: 1;
}

If you want to animate the height change between different image sizes, jQuery can be used:

$('.carousel').carousel().on('slide.bs.carousel', function (e) {
    var nextH = $(e.relatedTarget).height();
    $(this).find('.active.item').parent().animate({
        height: nextH
    }, 1000);
});

View the code on CODEPEN

Answer №2

Implementing JavaScript in a different way to achieve the same result.

See Example

In this code snippet, I have included an event listener for the slide.bs.carousel event triggered by Bootstrap. It calculates the height of the active item and then animates the height of the carousel-inner element.

Answer №3

<div class="container">
  <div class="picture active">
    <div class="image" style="background-image:url('http://placeholder.com/500x500')"></div>
  </div>
  <div class="picture">
    <div class="image" style="background-image:url('http://placeholder.com/400x400')"></div>
  </div>
  <div class="picture">
    <div class="image" style="background-image:url('http://placeholder.com/300x600')"></div>
  </div>
</div>

Apply custom styling

.picture .image {
   height:600px; // Set maximum height
   background-repeat:no-repeat;
   background-position:center center;
}

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