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javascript - 如何将纵向图像放入带有横向图像的引导轮播？

问题描述

我有一个引导轮播示例，其中包含 2 个横向（宽度大于高度）和 1 个纵向（高度大于宽度）图像。由于肖像比其他人高，它会导致如下所示的溢出

景观一 在此处输入图像描述

肖像一 在此处输入图像描述

我希望那个肖像看起来像下面（与其他人一样适合容器并居中） 在此处输入图像描述 此外，我的旋转木马可以响应地工作

 .carousel-inner img {
    width: 100%;
    height: 100%;
  }

需要

<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
  <style>
  /* Make the image fully responsive */
  .carousel-inner img {
    width: 100%;
    height: 100%;
  }
  </style>
</head>
<body>

<div id="demo" class="carousel slide" data-ride="carousel">

  <!-- Indicators -->
  <ul class="carousel-indicators">
    <li data-target="#demo" data-slide-to="0" class="active"></li>
    <li data-target="#demo" data-slide-to="1"></li>
    <li data-target="#demo" data-slide-to="2"></li>
  </ul>
  
  <!-- The slideshow -->
  <div class="carousel-inner">
    <div class="carousel-item active">
      <img src="https://lh3.googleusercontent.com/proxy/EYt1aGhp1AefOl1X9LbPivgHNrOKjxTvjO7F4290TG3zufR-TId_B9z05719q1vKMwA0pEMlW-nLJlr-lUp0bxkeC3A96LHUjH64U-2pjF8Yotym" alt="Los Angeles">
    </div>
    <div class="carousel-item">
      <img src="https://i.pinimg.com/736x/d1/a6/64/d1a664bca214bf785a293cbc87950fc4--jeff-bridges-male-photography.jpg" alt="Chicago">
    </div>
    <div class="carousel-item">
      <img src="https://encrypted-tbn0.gstatic.com/images?q=tbn%3AANd9GcSx7rAWWd5FIGTykriWl1WAKKZFwG9ieWI1aA&usqp=CAU" alt="New York">
    </div>
  </div>
  
  <!-- Left and right controls -->
  <a class="carousel-control-prev" href="#demo" data-slide="prev">
    <span class="carousel-control-prev-icon"></span>
  </a>
  <a class="carousel-control-next" href="#demo" data-slide="next">
    <span class="carousel-control-next-icon"></span>
  </a>
</div>

</body>
</html>

标签： javascripthtmlcssbootstrap-carousel

解决方案

如果您将图像作为背景图像而不是 img 放置到其包含的 div 中，则系统将自动调整大小和位置，以便它们适合您 - 如果用户调整窗口大小，图像将相应调整大小（此时图像获取如果窗口变窄，则“压扁”）。

包含图像的 div 的 CSS 可以添加以下内容：

  div.carousel-item {
    background-size: contain;
    background-position: center center;
    background-repeat: no-repeat no-repeat;
    width: 100%;
    height: 100%;
  }

和这个

<div class="carousel-item">
  <img src="https://i.pinimg.com/736x/d1/a6/64/d1a664bca214bf785a293cbc87950fc4--jeff-bridges-male-photography.jpg" alt="Chicago">
</div>

变成

<div class="carousel-item" style="background-image="url(https://i.pinimg.com/736x/d1/a6/64/d1a664bca214bf785a293cbc87950fc4--jeff-bridges-male-photography.jpg);">
</div>

这是在我的 Window 10 笔记本电脑上运行的完整代码：

<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
  <style>
  /* Make the image fully responsive */
  .carousel-inner img {
    width: 100%;
    height: 100%;
  }
  
  div.carousel-item {
  background-size:contain;
  background-position:center center;
  background-repeat:no-repeat no-repeat;
  width:100%;
  height:100%;
  }
  </style>
</head>
<body>

<div id="demo" class="carousel slide" data-ride="carousel">

  <!-- Indicators -->
  <ul class="carousel-indicators">
    <li data-target="#demo" data-slide-to="0" class="active"></li>
    <li data-target="#demo" data-slide-to="1"></li>
    <li data-target="#demo" data-slide-to="2"></li>
  </ul>
  
  <!-- The slideshow -->
  <div class="carousel-inner">
    <div class="carousel-item active" style="background-image:url(https://lh3.googleusercontent.com/proxy/EYt1aGhp1AefOl1X9LbPivgHNrOKjxTvjO7F4290TG3zufR-TId_B9z05719q1vKMwA0pEMlW-nLJlr-lUp0bxkeC3A96LHUjH64U-2pjF8Yotym);" alt="Los Angeles">
    </div>
    <div class="carousel-item" style="background-image:url(https://i.pinimg.com/736x/d1/a6/64/d1a664bca214bf785a293cbc87950fc4--jeff-bridges-male-photography.jpg);" alt="Chicago">
    </div>
    <div class="carousel-item" style="background-image:url(https://encrypted-tbn0.gstatic.com/images?q=tbn%3AANd9GcSx7rAWWd5FIGTykriWl1WAKKZFwG9ieWI1aA&usqp=CAU);" alt="New York">
    </div>
  </div>
  
  <!-- Left and right controls -->
  <a class="carousel-control-prev" href="#demo" data-slide="prev">
    <span class="carousel-control-prev-icon"></span>
  </a>
  <a class="carousel-control-next" href="#demo" data-slide="next">
    <span class="carousel-control-next-icon"></span>
  </a>
</div>

</body>
</html>

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