仅用于轮播的 Bootstrap CSS/Javascript

Question

仅用于轮播的 Bootstrap CSS/Javascript

当前使用带有控件的轮播

https://getbootstrap.com/docs/4.0/components/carousel/

<div id="carouselExampleControls" class="carousel slide" data-ride="carousel">
  <div class="carousel-inner">
    <div class="carousel-item active">
     <video controls="true">
      <source src="www.youtube.com/watch?v=3bGNuRtlqAQ" type="video/mp4" />
    </video>
    </div>
    <div class="carousel-item">
     <video controls="true">
       <source src="www.youtube.com/watch?v=3bGNuRtlqAQ" type="video/mp4" />
    </video>

    </div>
    <div class="carousel-item">
      <img class="d-block w-100" src="..." alt="Third slide">
    </div>
  </div>
  <a class="carousel-control-prev" href="#carouselExampleControls" 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="#carouselExampleControls" role="button" data-slide="next">
    <span class="carousel-control-next-icon" aria-hidden="true"></span>
    <span class="sr-only">Next</span>
  </a>
</div>

任何人都有此功能的 CSS 代码和 Javascript 代码？（不想要整个文件，因为它会与我的主 CSS 冲突）

Answer 1

我找到了一支旧笔并对其进行了一些定制以满足您的需求。

这是一个独立的 Bootstrap 4 Carousel，没有依赖项（甚至 jQuery）：

更新 1：添加图像源并将默认高度设置为70vh

更新 2：添加了视频 - iframe 支持。似乎 SOF 不允许视频/iframe 背景，所以这里是codepen源。

const carousel = document.getElementById('carouselExampleControls')
const items = carousel.querySelectorAll('.carousel-item');
let currentItem = 0;
let isActive = true;

function setCurrentItem(index) {
  currentItem = (index + items.length) % items.length;
}

function hideItem(direction) {
  isActive = false;
  items[currentItem].classList.add(direction);
  items[currentItem].addEventListener('animationend', function() {
    this.classList.remove('active', direction);
  });
}

function showItem(direction) {
  items[currentItem].classList.add('next', direction);
  items[currentItem].addEventListener('animationend', function() {
    this.classList.remove('next', direction);
    this.classList.add('active');
    isActive = true;
  });
}

document.getElementById('carouselPrev').addEventListener('click', function(e) {
  e.preventDefault()
  if (isActive) {
    hideItem('to-right');
    setCurrentItem(currentItem - 1);
    showItem('from-left');
  }
});

document.getElementById('carouselNext').addEventListener('click', function(e) {
  e.preventDefault()
  if (isActive) {
    hideItem('to-left');
    setCurrentItem(currentItem + 1);
    showItem('from-right');
  }
});

*,
*::after,
*::before {
  box-sizing: border-box;
}

img {
  display: block;
  vertical-align: middle;
}

body {
  margin: 0;
  font-family: sans-serif;
}

.carousel {
  position: relative;
}

.carousel-inner {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.carousel-inner>.carousel-item {
  position: relative;
  display: none;
  animation: 0.6s ease-in-out;
  height: 70vh; /* Set your height */
}

.carousel-item>.carousel-img {
  width: 100%;
  min-height: 70vh; /* same height */
  height: auto;
}
.carousel-item.carousel-video {
  display: block;
  object-fit: cover;
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  z-index: 0;
  -webkit-transform: translateX(-50%) translateY(-50%);
  transform: translateX(-50%) translateY(-50%);
  /* uncomment the following line if you want to prevent mouse (or touch) clicks */
  /* pointer-events: none; */
}
.carousel-inner>.active,
.carousel-inner>.next {
  display: block;
}

.carousel-inner>.next {
  position: absolute;
  top: 0;
  width: 100%;
}

.carousel-inner>.to-left {
  animation-name: left;
}

.carousel-inner>.from-right {
  animation-name: right;
}

.carousel-inner>.to-right {
  animation-name: right;
  animation-direction: reverse;
}

.carousel-inner>.from-left {
  animation-name: left;
  animation-direction: reverse;
}

.carousel-control {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 15%;
  cursor: pointer;
}

.carousel-control-prev,
.carousel-control-next {
  position: absolute;
  top: 0;
  bottom: 0;
  z-index: 1;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-align: center;
  align-items: center;
  -ms-flex-pack: center;
  justify-content: center;
  width: 15%;
  color: #fff;
  text-align: center;
  opacity: 0.5;
  transition: opacity 0.15s ease;
}

@media (prefers-reduced-motion: reduce) {
  .carousel-control-prev,
  .carousel-control-next {
    transition: none;
  }
}

.carousel-control-prev:hover,
.carousel-control-prev:focus,
.carousel-control-next:hover,
.carousel-control-next:focus {
  color: #fff;
  text-decoration: none;
  outline: 0;
  opacity: 0.9;
}

.carousel-control-prev {
  left: 0;
}

.carousel-control-next {
  right: 0;
}

.carousel-control-prev-icon,
.carousel-control-next-icon {
  display: inline-block;
  width: 20px;
  height: 20px;
  background: no-repeat 50% / 100% 100%;
}

.carousel-control-prev-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='%23fff' width='8' height='8' viewBox='0 0 8 8'%3e%3cpath d='M5.25 0l-4 4 4 4 1.5-1.5L4.25 4l2.5-2.5L5.25 0z'/%3e%3c/svg%3e");
}

.carousel-control-next-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='%23fff' width='8' height='8' viewBox='0 0 8 8'%3e%3cpath d='M2.75 0l-1.5 1.5L3.75 4l-2.5 2.5L2.75 8l4-4-4-4z'/%3e%3c/svg%3e");
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.sr-only-focusable:active,
.sr-only-focusable:focus {
  position: static;
  width: auto;
  height: auto;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

@keyframes left {
  from {
    left: 0;
  }
  to {
    left: -100%;
  }
}

@keyframes right {
  from {
    left: 100%;
  }
  to {
    left: 0;
  }
}

<div id="carouselExampleControls" class="carousel">
  <div class="carousel-inner">
    <!-- YouTube Video -->
    <div class="carousel-item active">
      <iframe class="carousel-video" width="100%" height="100%" src="https://www.youtube.com/embed/QEbuc3cgmsI" frameborder="0"
        allowfullscreen></iframe>
      <!-- add "?autoplay=1" at the end of the URL for autoplay i.e. https://www.youtube.com/embed/QEbuc3cgmsI?autoplay=1 -->
    </div>
    <!-- Local Video -->
    <div class="carousel-item">
      <video class="carousel-video" autoplay muted loop playsinline preload="metadata"
        poster="http://techslides.com/demos/sample-videos/small.jpg">
        <source src="http://techslides.com/demos/sample-videos/small.webm" type="video/webm">
        <source src="http://techslides.com/demos/sample-videos/small.ogv" type="video/ogg">
        <source src="http://techslides.com/demos/sample-videos/small.mp4" type="video/mp4">
      </video>
    </div>
    <!-- Image -->
    <div class="carousel-item">
      <img class="carousel-img" alt="Second slide" src="https://source.unsplash.com/collection/190728/1920x1080">
    </div>
  </div>

  <a id="carouselPrev" class="carousel-control-prev" href="#carouselExampleControls" role="button">
    <span class="carousel-control-prev-icon" aria-hidden="true"></span>
    <span class="sr-only">Previous</span>
  </a>
  <a id="carouselNext" class="carousel-control-next" href="#carouselExampleControls" role="button">
    <span class="carousel-control-next-icon" aria-hidden="true"></span>
    <span class="sr-only">Next</span>
  </a>
</div>

Answer 2

如果您使用像 Webpack 这样的捆绑器，您可以按照此处的说明导入和编译单个组件