如何解决Bootstrap Carousel Fade 和 Buttons 项目不起作用
我一直在尝试测试在引导程序上创建一个在三个图像之间淡入淡出的轮播（在本例中为 3 个“大猩猩”jpg）。但是我在学习 HTML 时遇到了困难。
问题 1：尽管类被设置为“carousel slide carousel-fade”，但这些图像之间的轮播没有淡入淡出。
问题 2：底部的按钮类显示文本上一个和下一个并且正在工作，但是，我需要这些是图标而不是文本。隐藏文本不会显示图标。
我是这一切的初学者，所以我感谢所有的帮助！
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<!doctype html>
<html lang="en">
<head>
<Meta charset="utf-8">
<Meta name="viewport" content="width=device-width,initial-scale=1">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta3/dist/css/bootstrap.min.css" rel="stylesheet"
integrity="sha384-eOJMYsd53ii+scO/bJGFsiCZc+5NDVN2yr8+0RDqr0Ql0h+rP48ckxlpbzKgwra6" crossorigin="anonymous">
</head>
<body>
<div id="myCarousel" class="carousel slide carousel-fade" data-bs-ride="carousel">
<div class="carousel-indicators">
<button type="button" data-bs-target="#myCarousel" data-bs-slide-to="0" class="active" aria-current="true"
aria-label="Slide 1"></button>
<button type="button" data-bs-target="#myCarousel" data-bs-slide-to="1" aria-label="Slide 2"></button>
<button type="button" data-bs-target="#myCarousel" data-bs-slide-to="2" aria-label="Slide 3"></button>
</div>
<div class="carousel-inner">
<div class="carousel-item active" data-bs-interval="3000">
<img src="http://placehold.jp/150x150.png" class="d-block w-100" alt="...">
<div class="carousel-caption d-none d-md-block">
<h5>First slide label</h5>
<p>Some representative placeholder content for the first slide.</p>
</div>
</div>
<div class="carousel-item" data-bs-interval="3000">
<img src="http://placehold.jp/50x50.png" class="d-block w-100" alt="...">
<div class="carousel-caption d-none d-md-block">
<h5>Second slide label</h5>
<p>Some representative placeholder content for the second slide.</p>
</div>
</div>
<div class="carousel-item" data-bs-interval="3000">
<img src="http://placehold.jp/100x100.png" class="d-block w-100" alt="...">
<div class="carousel-caption d-none d-md-block">
<h5>Third slide label</h5>
<p>Some representative placeholder content for the third slide.</p>
</div>
</div>
</div>
<button class="carousel-control-prev" type="button" data-bs-target="#myCarousel" data-bs-slide="prev">
<span class="carousel-control-prev-icon" aria-hidden="true"></span>
<span class="sr-only">PrevIoUs</span>
</button>
<button class="carousel-control-next" type="button" data-bs-target="#myCarousel" data-bs-slide="next">
<span class="carousel-control-next-icon" aria-hidden="true"></span>
<span class="sr-only">Next</span>
</button>
</div>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta3/dist/js/bootstrap.bundle.min.js"
integrity="sha384-JEW9xMcG8R+pH31jmWH6WWP0WintQrMb4s7ZOdauHnUtxwoG2vI5DkLtS3qm9Ekf" crossorigin="anonymous"></script>
</body>
</html>解决方法
您需要添加额外的 CSS 才能让淡入淡出按照您想要的方式工作。
这在 StackOverflow 的代码片段预览中没有很好地显示出来，因此您可能会更幸运地查看 this Codepen。
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta3/dist/css/bootstrap.min.css" rel="stylesheet"
integrity="sha384-eOJMYsd53ii+scO/bJGFsiCZc+5NDVN2yr8+0RDqr0Ql0h+rP48ckxlpbzKgwra6" crossorigin="anonymous">
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta3/dist/js/bootstrap.bundle.min.js"
integrity="sha384-JEW9xMcG8R+pH31jmWH6WWP0WintQrMb4s7ZOdauHnUtxwoG2vI5DkLtS3qm9Ekf"
crossorigin="anonymous"></script>
<style>
.carousel.carousel-fade .carousel-item {
opacity: 0;
transition: opacity ease-out .7s;
}
.carousel.carousel-fade .carousel-item.active {
opacity: 1;
transition: opacity ease-out .7s;
}
</style>
</head>
<body>
<div id="myCarousel" class="carousel slide carousel-fade" data-bs-ride="carousel">
<div class="carousel-indicators">
<button type="button" data-bs-target="#myCarousel" data-bs-slide-to="0" class="active" aria-current="true"
aria-label="Slide 1"></button>
<button type="button" data-bs-target="#myCarousel" data-bs-slide-to="1" aria-label="Slide 2"></button>
<button type="button" data-bs-target="#myCarousel" data-bs-slide-to="2" aria-label="Slide 3"></button>
</div>
<div class="carousel-inner">
<div class="carousel-item active" data-bs-interval="3000">
<img src="https://source.unsplash.com/random/400x300?a" class="d-block w-100" alt="...">
<div class="carousel-caption d-none d-md-block">
<h5>First slide label</h5>
<p>Some representative placeholder content for the first slide.</p>
</div>
</div>
<div class="carousel-item" data-bs-interval="3000">
<img src="https://source.unsplash.com/random/400x300?b" class="d-block w-100" alt="...">
<div class="carousel-caption d-none d-md-block">
<h5>Second slide label</h5>
<p>Some representative placeholder content for the second slide.</p>
</div>
</div>
<div class="carousel-item" data-bs-interval="3000">
<img src="https://source.unsplash.com/random/400x300?c" class="d-block w-100" alt="...">
<div class="carousel-caption d-none d-md-block">
<h5>Third slide label</h5>
<p>Some representative placeholder content for the third slide.</p>
</div>
</div>
</div>
<button class="carousel-control-prev" type="button" data-bs-target="#myCarousel" data-bs-slide="prev">
<span class="carousel-control-prev-icon" aria-hidden="true"></span>
<span class="sr-only">Previous</span>
</button>
<button class="carousel-control-next" type="button" data-bs-target="#myCarousel" data-bs-slide="next">
<span class="carousel-control-next-icon" aria-hidden="true"></span>
<span class="sr-only">Next</span>
</button>
</div>
</body>
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