Infinite Carousel Slider With Autoplay

A tiny, flexible, infinite-looping, auto-rotating carousel slider written in pure JS without jQuery.

How to use it:

1. Add slides together with the navigation arrows and pagination controls to the carousel.

<div class="carousel">
  <div class="carousel-inner">
    <div style="background-color: orange;" class="carousel-item"><h1>First slide</h1></div>
    <div style="background-color: greenyellow;"  class="carousel-item"><h1>Second slide</h1></div>
    <div style="background-color: rgb(37, 150, 255);" class="carousel-item"><h1>Third slide</h1></div>
    <div style="background-color: rgb(192, 192, 192);" class="carousel-item"><h1>Fourth slide</h1></div>
  </div>
  <div class="carousel-controls">
    <span class="prev"></span>
    <span class="next"></span>
  </div>
  <div class="carousel-indicators"></div>
</div>

2. The necessary CSS styles for the carousel. Feel free to override & modify the CSS rules to create your own styles.

.carousel{
  height: 400px;
  width: 100vw;
  margin-top: 40px;
  margin-bottom: 40px;
  max-width: 678px;
  overflow-x: hidden;
  position: relative;
  display: flex;
  justify-content: flex-start;
  border-radius: 13px;
}
.carousel-inner{
  height: 100%;
  /* min-width: 400%; */
  display: flex;
  transition: all ease .5s;
}
.carousel-item{
  flex: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.carousel-item h1{
  opacity: .5;
}
.carousel-controls .prev{
  display: inline-block;
  height: 32px;
  width: 32px;
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  background-image: url('prev.svg');
  background-position: center;
  background-size: auto 100%;
  background-repeat: no-repeat;
  cursor: pointer;
  opacity: .5;
}
.carousel-controls .next{
  display: inline-block;
  height: 32px;
  width: 32px;
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background-image: url('next.svg');
  background-position: center;
  background-size: auto 100%;
  background-repeat: no-repeat;
  cursor: pointer;
  opacity: .5;
}
.prev:hover, .next:hover{
  opacity: 1;
}
.carousel-indicators{
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
}
.carousel-indicators span{
  display: inline-block;
  background-color: white;
  width: 30px;
  height: 4px;
  border-radius: 2px;
  opacity: .5;
  cursor: pointer;
  margin: 3px;
}
.carousel-indicators span.active{
  opacity: 1;
}

3. Add the main script to the bottom of the page. That’s it.

<script src="script.js"></script>

4. Customize the autoplay interval in milliseconds.

let interval = 2000;

Changelog:

01/16/2025

• Fixed download link