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Bootstrap Carousel Tutorial with Examples

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1- Bootstrap Carousel

Carousel is similar to a slidershow, which displays to cycle some contents, for example, image, text,... The Carousel of Bootstrap is built based on the CSS and a little Javascript.
Below is the illustration of a Carousel. It displays to cycle some images.
A full Carousel has structure like the following illustration:
The most simple Carousel includes only Items (Slider) and the content of each Slider is an image. It doesn't consist of controls and Indicators.
simple-carousel-example.html

<!DOCTYPE html>
<html>
   <head>
      <meta charset="utf-8">
      <title>Bootstrap Carousel</title>
      <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css">
   </head>
   <body>
      <div class="container">
         <h4 class="mb-3">Simple Carousel</h4>
         <div id="myCarousel" class="carousel slide border" data-ride="carousel">
            <div class="carousel-inner">
               <div class="carousel-item active">
                  <img class="d-block w-100" src="../images/carousel-img-1.jpg" alt="Panther">
               </div>
               <div class="carousel-item">
                  <img class="d-block w-100" src="../images/carousel-img-2.jpg" alt="Black Cat">
               </div>
               <div class="carousel-item">
                  <img class="d-block w-100" src="../images/carousel-img-3.jpg" alt="Lion">
               </div>
            </div>
         </div>
      </div>
      <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"></script>
      <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js"></script>
      <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
   </body>
</html>

2- Carousel with Controls

A normal Carousel has  "Next" and "Previous" buttons to allow users to jump to a next Slider or back previous Slider. They are called Controls.
Carousel with Control

<div id="myCarousel" class="carousel slide border" data-ride="carousel">
   <div class="carousel-inner">
      <div class="carousel-item active">
         <img class="d-block w-100" src="../images/carousel-img-1.jpg" alt="Leopard">
      </div>
      <div class="carousel-item">
         <img class="d-block w-100" src="../images/carousel-img-2.jpg" alt="Cat">
      </div>
      <div class="carousel-item">
         <img class="d-block w-100" src="../images/carousel-img-3.jpg" alt="Lion">
      </div>
   </div>
   <!-- Controls -->
   <a class="carousel-control-prev" href="#myCarousel" role="button" data-slide="prev">
     <span class="carousel-control-prev-icon" aria-hidden="true"></span>
     <span class="sr-only">Previous</span>
   </a>
   <a class="carousel-control-next" href="#myCarousel" role="button" data-slide="next">
     <span class="carousel-control-next-icon" aria-hidden="true"></span>
     <span class="sr-only">Next</span>
   </a>
</div>
Example of Controls customization:
Custom Controls

 .carousel-control-prev-icon {
     background-image: url(../images/previous-32.png);
     width: 32px;
     height: 32px;
}
 .carousel-control-next-icon {
     background-image: url(../images/next-32.png);
     width: 32px;
     height: 32px;
}

3- Carousel with Indicators

Indicators like Shortcuts help users jump to a specific  Item (Slider) in the list of Items of Carousel. Note: The Items in Carousel is marked index starting from 0 (0, 1, 2,..)
Carousel Indicators

<div id="myCarousel" class="carousel slide border" data-ride="carousel">
   <!-- Indicators -->
   <ol class="carousel-indicators">
      <li data-target="#myCarousel" data-slide-to="0" class="active"></li>
      <li data-target="#myCarousel" data-slide-to="1"></li>
      <li data-target="#myCarousel" data-slide-to="2"></li>
   </ol>

   ...

</div>
Carousel Indicators

<div id="myCarousel" class="carousel slide border" data-ride="carousel">
   <!-- Indicators -->
   <ol class="carousel-indicators">
      <li data-target="#myCarousel" data-slide-to="0" class="active"></li>
      <li data-target="#myCarousel" data-slide-to="1"></li>
      <li data-target="#myCarousel" data-slide-to="2"></li>
   </ol>
   <div class="carousel-inner">
      <div class="carousel-item active">
         <img class="d-block w-100" src="../images/carousel-img-1.jpg" alt="Leopard">
      </div>
      <div class="carousel-item">
         <img class="d-block w-100" src="../images/carousel-img-2.jpg" alt="Cat">
      </div>
      <div class="carousel-item">
         <img class="d-block w-100" src="../images/carousel-img-3.jpg" alt="Lion">
      </div>
   </div>
   <!-- Controls -->
   <a class="carousel-control-prev" href="#myCarousel" role="button" data-slide="prev">
     <span class="carousel-control-prev-icon" aria-hidden="true"></span>
     <span class="sr-only">Previous</span>
   </a>
   <a class="carousel-control-next" href="#myCarousel" role="button" data-slide="next">
     <span class="carousel-control-next-icon" aria-hidden="true"></span>
     <span class="sr-only">Next</span>
   </a>
</div>
Below are some examples of Indicators customization.
Custom Indicators (1)
Custom Indicators (1)

.carousel-indicators li {
  width: 20px;
  height: 20px;
  border-radius: 100%;
}
Custom Indicators (2)
Custom Indicators (2)

 .carousel-indicators li {
     text-indent: 0px;
     text-align: center;
     color: red;
     margin: 0 2px;
     width: 30px;
     height: 30px;
     border: none;
     border-radius: 100%;
     line-height: 30px;
     background-color: #999;
     transition: all 0.25s ease;
}
 .carousel-indicators .active, .hover {
     margin: 0 2px;
     width: 30px;
     height: 30px;
     background-color: #337ab7;
}
Custom Indicators (2)

<div id="myCarousel" class="carousel slide border" data-ride="carousel">
   <ol class="carousel-indicators">
      <li data-target="#myCarousel" data-slide-to="0" class="active">1</li>
      <li data-target="#myCarousel" data-slide-to="1">2</li>
      <li data-target="#myCarousel" data-slide-to="2">3</li>
   </ol>
   <div class="carousel-inner">
      <div class="carousel-item active">
         <img class="d-block w-100" src="../images/carousel-img-1.jpg" alt="Panther">
      </div>
      <div class="carousel-item">
         <img class="d-block w-100" src="../images/carousel-img-2.jpg" alt="Black Cat">
      </div>
      <div class="carousel-item">
         <img class="d-block w-100" src="../images/carousel-img-3.jpg" alt="Lion">
      </div>
   </div>
   <a class="carousel-control-prev" href="#myCarousel" role="button" data-slide="prev">
   <span class="carousel-control-prev-icon" aria-hidden="true"></span>
   <span class="sr-only">Previous</span>
   </a>
   <a class="carousel-control-next" href="#myCarousel" role="button" data-slide="next">
   <span class="carousel-control-next-icon" aria-hidden="true"></span>
   <span class="sr-only">Next</span>
   </a>
</div>
Custom Indicators (3)
Cutom Indicators (3)

.carousel-indicators {
     position: absolute;
     bottom: 0;
     margin: 0;
     left: 0;
     right: 0;
     width: auto;
}
.carousel-indicators li, .carousel-indicators li.active {
     float: left;
     width: 33%;
     height: 10px;
     margin: 0;
     border-radius: 0;
     border: 0;
     background: #ccc;
}
.carousel-indicators li.active {
     background: orange;
}

4- Carousel with Caption

For each Slider you can add caption to it. This is done easily by wrapping your caption content in the  <div class="carousel-caption"> tag.
Carousel Item with Caption!

<div class="carousel-item">
   <img class="d-block w-100" src="../images/carousel-img-2.jpg" alt="Cat">

   <!--Caption here -->
   <div class="carousel-caption">
      <h5>Black Cat</h5>
      <small>
      A black cat is a domestic cat with black fur that may be a mixed or specific breed
      </small>
   </div>

</div>
Carousel with caption

<div id="myCarousel" class="carousel slide border" data-ride="carousel">
   <div class="carousel-inner">
      <div class="carousel-item active">
         <img class="d-block w-100" src="../images/carousel-img-1.jpg" alt="Leopard">
         <div class="carousel-caption">
            <h5>Leopard</h5>
            <small>
            A black Panther is the melanistic color variant of any big cat species.
            Black Panthers in Asia and Africa are leopards (Panthera pardus).
            </small>
         </div>
      </div>
      <div class="carousel-item">
         <img class="d-block w-100" src="../images/carousel-img-2.jpg" alt="Cat">
         <div class="carousel-caption">
            <h5>Black Cat</h5>
            <small>
            A black cat is a domestic cat with black fur that may be a mixed or specific breed
            </small>
         </div>
      </div>
      <div class="carousel-item">
         <img class="d-block w-100" src="../images/carousel-img-3.jpg" alt="Lion">
         <div class="carousel-caption">
            <h5>Lion</h5>
            <small>
            The lion (Panthera leo) is a species in the cat family (Felidae).
            A muscular, deep-chested cat, it has a short, rounded head, a reduced neck and round ears
            </small>
         </div>
      </div>
   </div>
   <a class="carousel-control-prev" href="#myCarousel" role="button" data-slide="prev">
   <span class="carousel-control-prev-icon" aria-hidden="true"></span>
   <span class="sr-only">Previous</span>
   </a>
   <a class="carousel-control-next" href="#myCarousel" role="button" data-slide="next">
   <span class="carousel-control-next-icon" aria-hidden="true"></span>
   <span class="sr-only">Next</span>
   </a>
</div>
The captions should be display for devices with large screen width. For too small screen equipment, you can hide them, which can be performed with the support of the .d-(sm|md|lg|xl)-block, .d-none ​​​​​​​class.
ClassDescription
.d-sm-block .d-noneCaption will display if the width of Carousel is >= 567px. Conversely, it will be hidden.
.d-md-block .d-noneCaption will display if the width of Carousel is >= 768px. Conversely, it will be hidden.
.d-lg-block .d-noneCaption will display if the width of Carousel is >= 992px. Conversely, it will be hidden.
.d-xl-block .d-noneCaption will display if the width of Carousel is >= 1200px. Conversely, it will be hidden.
carousel-responsive-caption-example.html

<!DOCTYPE html>
<html>
   <head>
      <meta charset="utf-8">
      <title>Bootstrap Carousel</title>
      <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css">
   </head>
   <body>
      <div class="container-fluid">
         <h4 class="mb-3">Responsive Carousel with Caption</h4>
         <p>.carousel-caption .d-none .d-sm-block</p>
         <div id="myCarousel" class="carousel slide border" data-ride="carousel">
            <div class="carousel-inner">
               <div class="carousel-item active">
                  <img class="d-block w-100" src="../images/carousel-img-1.jpg" alt="Leopard">
                  <div class="carousel-caption d-none d-sm-block">
                     <h5>Leopard</h5>
                     <small>
                     A black Panther is the melanistic color variant of any big cat species.
                     Black Panthers in Asia and Africa are leopards (Panthera pardus).
                     </small>
                  </div>
               </div>
               <div class="carousel-item">
                  <img class="d-block w-100" src="../images/carousel-img-2.jpg" alt="Cat">
                  <div class="carousel-caption d-none d-sm-block">
                     <h5>Black Cat</h5>
                     <small>
                     A black cat is a domestic cat with black fur that may be a mixed or specific breed
                     </small>
                  </div>
               </div>
               <div class="carousel-item">
                  <img class="d-block w-100" src="../images/carousel-img-3.jpg" alt="Lion">
                  <div class="carousel-caption d-none d-sm-block">
                     <h5>Lion</h5>
                     <small>
                     The lion (Panthera leo) is a species in the cat family (Felidae).
                     A muscular, deep-chested cat, it has a short, rounded head,
                     a reduced neck and round ears
                     </small>
                  </div>
               </div>
            </div>
            <a class="carousel-control-prev" href="#myCarousel" role="button" data-slide="prev">
            <span class="carousel-control-prev-icon" aria-hidden="true"></span>
            <span class="sr-only">Previous</span>
            </a>
            <a class="carousel-control-next" href="#myCarousel" role="button" data-slide="next">
            <span class="carousel-control-next-icon" aria-hidden="true"></span>
            <span class="sr-only">Next</span>
            </a>
         </div>
      </div>
      <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"></script>
      <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js"></script>
      <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
   </body>
</html>

5- Effect

Add .carousel-fade to Carousel, you will see fade effect when the Carousel transfers from this Slider to another Slider.
.carousel-fade

<div id="myCarousel" class="carousel carousel-fade slide border" data-ride="carousel">
   <div class="carousel-inner">
      <div class="carousel-item active">
         <img class="d-block w-100" src="../images/carousel-img-1.jpg" alt="Leopard">
      </div>
      <div class="carousel-item">
         <img class="d-block w-100" src="../images/carousel-img-2.jpg" alt="Cat">
      </div>
      <div class="carousel-item">
         <img class="d-block w-100" src="../images/carousel-img-3.jpg" alt="Lion">
      </div>
   </div>
   <!-- Controls -->
   <a class="carousel-control-prev" href="#myCarousel" role="button" data-slide="prev">
   <span class="carousel-control-prev-icon" aria-hidden="true"></span>
   <span class="sr-only">Previous</span>
   </a>
   <a class="carousel-control-next" href="#myCarousel" role="button" data-slide="next">
   <span class="carousel-control-next-icon" aria-hidden="true"></span>
   <span class="sr-only">Next</span>
   </a>
</div>

6- Options for Carousel

There are some options that you can apply to the Carousel, for example, set up the duration when the Carousel temporarily suspends before transferring to next Slider. The settings allow the Carousel to automatically cycle or not....
TODO!!

View more Tutorials:

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