代码：
<!doctypehtml>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport"
content="width=device-width,initial-scale=1,shrink-to-fit=no">
<title>bootstrap jquery 轮播</title>
<link rel="stylesheet" href="bootstrap-4.1.3-dist/css/bootstrap.min.css">
<script src="js/jquery-3.2.1.min.js"></script>
<script src="bootstrap-4.1.3-dist/js/bootstrap.min.js"></script>
<style>
.a1 img{
height: 500px;
}
</style>
</head>
<body>
<div class="container">
<div id="carouselIndicators"
class="carousel slide" data-ride="carousel">
<ol
class="carousel-indicators">
<li data-target="#carouselIndicators" data-slide-to="0" class="active"></li>
<li data-target="#carouselIndicators" data-slide-to="1"></li>
<li data-target="#carouselIndicators" data-slide-to="2"></li>
</ol>
<div class="carousel-inner a1">
<div class="carousel-item active">
<img class="d-block w-100" src="img/img1.jpg" alt="First slide">
</div>
<div class="carousel-item">
<img class="d-block w-100" src="img/img2.jpg" alt="Second slide">
</div>
<div class="carousel-item">
<img class="d-block w-100" src="img/img3.jpg" alt="Third slide">
</div>
</div>
<a class="carousel-control-prev" href="#carouselIndicators" 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="#carouselIndicators" role="button" data-slide="next">
<span class="carousel-control-next-icon" aria-hidden="true"></span>
<span class="sr-only">Next</span>
</a>
</div>
</div>
</body>
</html>
效果：
