bootstrap 4多个元素之前崩溃

Question

我添加了引导程序轮播并更改为显示多个项目，尽管我有问题

当我单击下一个徽标时，一切正常，但是当我单击上一个徽标时，会同时出现多个徽标，然后自行修复，会发生什么情况？我该如何解决这个问题？

这里是项目、实时页面和完整存储库的链接

链接已删除，因为不再存在

这里是 Codepen https://codepen.io/sebalaini/pen/wpRVYL 和代码：

  <div id="carousel" class="carousel slide" data-ride="carousel">
      <ol class="carousel-indicators">
        <li data-target="#carousel" data-slide-to="0" class="active"></li>
        <li data-target="#carousel" data-slide-to="4"></li>
        <li data-target="#carousel" data-slide-to="8"></li>
        <li data-target="#carousel" data-slide-to="10"></li>
      </ol>

      <div class="carousel-inner">
        <div class="carousel-item active">
          <img class="d-block" src="https://wallpapercave.com/wp/ci1BoK6.jpg" alt="First slide">
          <div class="carousel-caption d-block">
            <h4>HTML</h4>
          </div>
        </div>

        <div class="carousel-item">
          <img class="d-block" src="https://wallpapercave.com/wp/ci1BoK6.jpg" alt="Second slide">
          <div class="carousel-caption d-block">
            <h4>CSS</h4>
          </div>
        </div>

        <div class="carousel-item">
          <img class="d-block" src="https://wallpapercave.com/wp/ci1BoK6.jpg" alt="Third slide">
          <div class="carousel-caption d-block">
            <h4>SASS</h4>
          </div>
        </div>

        <div class="carousel-item">
          <img class="d-block" src="https://wallpapercave.com/wp/ci1BoK6.jpg" alt="Third slide">
          <div class="carousel-caption d-block">
            <h4>Javascript</h4>
          </div>
        </div>

        <div class="carousel-item">
          <img class="d-block" src="https://wallpapercave.com/wp/ci1BoK6.jpg" alt="First slide">
          <div class="carousel-caption d-block">
            <h4>Jquery</h4>
          </div>
        </div>

        <div class="carousel-item">
          <img class="d-block" src="https://wallpapercave.com/wp/ci1BoK6.jpg" alt="Second slide">
          <div class="carousel-caption d-block">
            <h4>React</h4>
          </div>
        </div>

        <div class="carousel-item">
          <img class="d-block" src="https://wallpapercave.com/wp/ci1BoK6.jpg" alt="First slide">
          <div class="carousel-caption d-block">
            <h4>webpack</h4>
          </div>
        </div>

        <div class="carousel-item">
          <img class="d-block" src="https://wallpapercave.com/wp/ci1BoK6.jpg" alt="Third slide">
          <div class="carousel-caption d-block">
            <h4>NPM</h4>
          </div>
        </div>

      </div>

      <a class="carousel-control-prev" href="#carousel" 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="#carousel" role="button" data-slide="next">
        <span class="carousel-control-next-icon" aria-hidden="true"></span>
        <span class="sr-only">Next</span>
      </a>
    </div>

Answer 1

看来你们的指标编号有点混乱。另外，你有一些适合我口味的自定义 CSS。因此，我将其删除并使用本机 Bootstrap 类代替，例如

mx-auto

（边距水平自动）。

查看此代码片段，然后开始一点一点地添加您自己的自定义代码，直到看到它的中断位置：

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">

<style>
    body {
        background: black;
    }
    .carousel-inner {
        height: 300px;
    }

    .carousel-item {
        height: 300px;
    }
    .carousel-item img {
        max-width: 250px;
        max-height: 250px;
    }
</style>


<div class="container">
    <div class="row">
        <div class="col mt-4">
            <div id="carousel" class="carousel slide" data-ride="carousel">
                <ol class="carousel-indicators">
                    <li data-target="#carousel" data-slide-to="0" class="active"></li>
                    <li data-target="#carousel" data-slide-to="3"></li>
                    <li data-target="#carousel" data-slide-to="7"></li>
                </ol>

                <div class="carousel-inner">
                    <div class="carousel-item active">
                        <img class="d-block mx-auto" src="https://wallpapercave.com/wp/ci1BoK6.jpg" alt="First slide">
                        <div class="carousel-caption d-block mx-auto">
                            <h4>01 HTML</h4>
                        </div>
                    </div>

                    <div class="carousel-item">
                        <img class="d-block mx-auto" src="https://wallpapercave.com/wp/ci1BoK6.jpg" alt="Second slide">
                        <div class="carousel-caption d-block mx-auto">
                            <h4>02 CSS</h4>
                        </div>
                    </div>

                    <div class="carousel-item">
                        <img class="d-block mx-auto" src="https://wallpapercave.com/wp/ci1BoK6.jpg" alt="Third slide">
                        <div class="carousel-caption d-block mx-auto">
                            <h4>03 SASS</h4>
                        </div>
                    </div>

                    <div class="carousel-item">
                        <img class="d-block mx-auto" src="https://wallpapercave.com/wp/ci1BoK6.jpg" alt="Third slide">
                        <div class="carousel-caption d-block mx-auto">
                            <h4>04 Javascript</h4>
                        </div>
                    </div>

                    <div class="carousel-item">
                        <img class="d-block mx-auto" src="https://wallpapercave.com/wp/ci1BoK6.jpg" alt="First slide">
                        <div class="carousel-caption d-block mx-auto">
                            <h4>05 Jquery</h4>
                        </div>
                    </div>

                    <div class="carousel-item">
                        <img class="d-block mx-auto" src="https://wallpapercave.com/wp/ci1BoK6.jpg" alt="Second slide">
                        <div class="carousel-caption d-block mx-auto">
                            <h4>06 React</h4>
                        </div>
                    </div>

                    <div class="carousel-item">
                        <img class="d-block mx-auto" src="https://wallpapercave.com/wp/ci1BoK6.jpg" alt="First slide">
                        <div class="carousel-caption d-block mx-auto">
                            <h4>07 webpack</h4>
                        </div>
                    </div>

                    <div class="carousel-item">
                        <img class="d-block mx-auto" src="https://wallpapercave.com/wp/ci1BoK6.jpg" alt="Third slide">
                        <div class="carousel-caption d-block mx-auto">
                            <h4>08 NPM</h4>
                        </div>
                    </div>

                </div>

                <a class="carousel-control-prev" href="#carousel" 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="#carousel" role="button" data-slide="next">
                    <span class="carousel-control-next-icon" aria-hidden="true"></span>
                    <span class="sr-only">Next</span>
                </a>
            </div>

        </div>
    </div>
</div>


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