更改bootstrap旋转木马褪色过渡

Question

stackoverflow上有几个有关旋转木马淡出过渡的问题，但它们似乎在默认的4.0.0实现上没有作用：

<div id="carouselExampleIndicators" class="carousel slide" data-ride="carousel">
  <ol class="carousel-indicators">
    <li data-target="#carouselExampleIndicators" data-slide-to="0" class="active"></li>
    <li data-target="#carouselExampleIndicators" data-slide-to="1"></li>
    <li data-target="#carouselExampleIndicators" data-slide-to="2"></li>
  </ol>
  <div class="carousel-inner">
    <div class="carousel-item active">
      <img class="d-block w-100" src="..." alt="First slide">
    </div>
    <div class="carousel-item">
      <img class="d-block w-100" src="..." alt="Second slide">
    </div>
    <div class="carousel-item">
      <img class="d-block w-100" src="..." alt="Third slide">
    </div>
  </div>
  <a class="carousel-control-prev" href="#carouselExampleIndicators" 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="#carouselExampleIndicators" role="button" data-slide="next">
    <span class="carousel-control-next-icon" aria-hidden="true"></span>
    <span class="sr-only">Next</span>
  </a>
</div>

Bootstrap是否改变了自Alpha.6版本以来过渡carousel-item -S的方式？如何实现淡出过渡，而不是在4.0.0中幻灯片？

Answer 1

bootstrap 5旋转木马褪色(更新2021(

Bootstrap 5包括"淡出"。可以通过简单地将carousel-fade类添加到旋转木马中来使用的效果。默认情况下，过渡持续时间为.6s。要增加持续时间，并使幻灯片之间的褪色较慢，请覆盖CSS上的过渡时机...

/* change transition duration to control the speed of fade effect */
.carousel-item {
  transition: transform 2.6s ease-in-out;
}
.carousel-fade .active.carousel-item-start,
.carousel-fade .active.carousel-item-end {
  transition: opacity 0s 2.6s;
}

bootstrap 5旋转木旋褪色慢

---

bootstrap 4.0旋转木马褪色(原始答案(

.carousel-fade .carousel-item {
 opacity: 0;
 transition-duration: .6s;
 transition-property: opacity;
}
.carousel-fade  .carousel-item.active,
.carousel-fade  .carousel-item-next.carousel-item-left,
.carousel-fade  .carousel-item-prev.carousel-item-right {
  opacity: 1;
}
.carousel-fade .active.carousel-item-left,
.carousel-fade  .active.carousel-item-right {
 opacity: 0;
}
.carousel-fade  .carousel-item-next,
.carousel-fade .carousel-item-prev,
.carousel-fade .carousel-item.active,
.carousel-fade .active.carousel-item-left,
.carousel-fade  .active.carousel-item-prev {
 transform: translateX(0);
 transform: translate3d(0, 0, 0);
}

---

在4.0 beta期间，从旋转木马中删除了褪色效果，在4.0.0中也不可用。此拉的请求表明，淡出效果将以4.1或4.2返回。同时，上述CSS将用于4.0.0

https://codeply.com/go/lhljlldsln

Answer 2

要获得淡入淡出效果，您可以在下面添加'carousel-fade＆quot'类。

---

更新：Bootstrap 5

Bootstrap 5在Bootstrap 4中几乎相同，但data-ride属性现在为data-bs-ride。

bootstrap 5示例

<div id="carouselExampleIndicators" class="carousel slide carousel-fade" data-bs-ride="carousel">
...
</div>

---

bootstrap 4示例

<div id="carouselExampleIndicators" class="carousel slide carousel-fade" data-ride="carousel"> 
....
</div>

Answer 3

应在Bootstrap 4.1中固定。

https://blog.getbootstrap.com/2018/04/09/bootstrap-4-1/

Answer 4

在Bootstrap 4中，您可以添加" slide fade"这样的课程：

<div id="carouselExampleIndicators" class="carousel slide-fade" data-ride="carousel">....</div>