Bootstrap 4 的 Carousel 的实现不起作用

Question

I have written the following code for carousel using Bootstrap 4. I have appended the code.我已经使用 Bootstrap 4 为 carousel 编写了以下代码。我已经附加了代码。 However, I am unable to bring the other slides into picture only the first slide comes into picture even with the controls.但是，即使使用控件，我也无法将其他幻灯片放入图片中，只有第一张幻灯片出现在图片中。 I wish to know what is wrong with the code.我想知道代码有什么问题。

carousel.js carousel.js

<html>

<head>
    <title> Carousel</title>
  
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/javascript.util/0.12.12/javascript.util.min.js"></script>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">


    <title>Carousel</title>
    <style>
    </style>
</head>

<body>


    <div class="container">
        <h2>Carousel Example</h2>
        <div id="carouselExampleControls" class="carousel slide" data-ride="carousel">

            <!-- Wrapper for slides -->
            <div class="carousel-inner">

                <div class="carousel-item active">
                    <img  class="d-block w-100" src="Desert.jpg" alt="Desert" style="width:100%;">
                   
                </div>

                <div class="carousel-item">
                    <img  class="d-block w-100" src="Hydrangeas.jpg" alt="Hydrangeas" style="width:100%;">
                    
                </div>

                <div class="carousel-item">
                    <img class="d-block w-100" src="Jellyfish.jpg" alt="Jellyfish" style="width:100%;">
                    
                </div>

            </div>

            <!-- Left and right controls -->
            <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>
    </div>
</body>

</html>

Answer 1

You don't add the Bootstrap JavaScript plugins , so the code for the slide behaviors of the carousel isn't available.您没有添加Bootstrap JavaScript 插件，因此轮播的幻灯片行为的代码不可用。 You have to add the following <script> to the <head> at least:您必须至少将以下<script>添加到<head>中：

<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js" integrity="sha384-B4gt1jrGC7Jh4AgTPSdUtOBvfO8shuf57BaghqFfPlYxofvL8/KUEfYiJOMMV+rV" crossorigin="anonymous"></script>

Your working example:您的工作示例：

 <html> <head> <title> Carousel</title> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/javascript.util/0.12.12/javascript.util.min.js"></script> <!-- Bootstrap CSS and JS --> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css"> <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js" integrity="sha384-B4gt1jrGC7Jh4AgTPSdUtOBvfO8shuf57BaghqFfPlYxofvL8/KUEfYiJOMMV+rV" crossorigin="anonymous"></script> </head> <body> <div class="container"> <h2>Carousel Example</h2> <div id="carouselExampleControls" class="carousel slide" data-ride="carousel"> <!-- wrapper for slides --> <div class="carousel-inner"> <div class="carousel-item active"> <img class="d-block w-100" src="https://placehold.it/100x101" alt="Desert" style="width:100%;"> </div> <div class="carousel-item"> <img class="d-block w-100" src="https://placehold.it/100x102" alt="Hydrangeas" style="width:100%;"> </div> <div class="carousel-item"> <img class="d-block w-100" src="https://placehold.it/100x103" alt="Jellyfish" style="width:100%;"> </div> </div> <!-- left and right controls --> <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> </div> </body> </html>

Bootstrap 4 的 Carousel 的实现不起作用

问题描述

1 个解决方案

解决方案1
0 2020-09-18 07:29:15

Bootstrap 4 的 Carousel 的实现不起作用

问题描述

1 个解决方案

解决方案1 0 2020-09-18 07:29:15

解决方案1
0 2020-09-18 07:29:15