我有以下 BS4 轮播代码（使用本教程制作的），但是代码不起作用，显示了第一张图像，但我不知道出于什么原因轮播不受控制，并且在任何情况下都不会转到下一张图像。可能的解决方案是什么？
<div class="container">
<div class="row">
<div class="col-xs-12 col-sm-12 col-md-12 col-lg-12 col-xl-12">
<br />
<div id="carousel-example-generic" class="carousel-slide" data-ride="carousel">
<ol class="carousel-indicators">
<li data-target="#carousel-example-generic" data-slide-to="0" class="active"> </li>
<li data-target="#carousel-example-generic" data-slide-to="1"> </li>
<li data-target="#carousel-example-generic" data-slide-to="2"> </li>
</ol>
<div class="carousel-inner" role="listbox">
<div class="carousel-item-active">
<img src="images/1.jpeg" alt="First-Slide">
</div>
<div class="carousel-item">
<img src="images/2.jpeg" alt="Second-Slide">
</div>
<div class="carousel-item">
<img src="images/3.jpeg" alt="Third-Slide">
</div>
</div>
<a class="left carousel-control" href="#carousel-example-generic" role="button" data-slide="prev">
<span class="icon-prev" aria-hidden="true"></span>
<span class="sr-only"> Previous </span>
</a>
<a class="right carousel-control" href="#carousel-example-generic" role="button" data-slide="next">
<span class="icon-next" aria-hidden="true"></span>
<span class="sr-only"> Next </span>
</a>
</div>
</div>
</div>
</div>
完美运作
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<div id="myCarousel" class="carousel slide" data-ride="carousel">
<!-- Indicators -->
<ol class="carousel-indicators">
<li data-target="#myCarousel" data-slide-to="0" class="active"></li>
<li data-target="#myCarousel" data-slide-to="1"></li>
<li data-target="#myCarousel" data-slide-to="2"></li>
</ol>
<!-- Wrapper for slides -->
<div class="carousel-inner">
<div class="item active">
<img src="https://www.w3schools.com/bootstrap/ny.jpg" alt="Los Angeles" style="width:100%;">
</div>
<div class="item">
<img src="https://www.w3schools.com/bootstrap/chicago.jpg" alt="Chicago" style="width:100%;">
</div>
<div class="item">
<img src="https://www.w3schools.com/bootstrap/newyork.jpg" alt="New york" style="width:100%;">
</div>
</div>
<!-- Left and right controls -->
<a class="left carousel-control" href="#myCarousel" data-slide="prev">
<span class="glyphicon glyphicon-chevron-left"></span>
<span class="sr-only">Previous</span>
</a>
<a class="right carousel-control" href="#myCarousel" data-slide="next">
<span class="glyphicon glyphicon-chevron-right"></span>
<span class="sr-only">Next</span>
</a>
</div>
</div>
</body>
</html>
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