那些遇到过的问题

将img移动到断点上的另一个bootstrap col

fug*_*ugu 5 html javascript css function twitter-bootstrap

使用Bootstrap 4,我有一个<container>有两列.

在屏幕尺寸属于boostrap 4断点 md-xl的范围内,它们排列在两个大小相等的列中:col-md-6并且在sm-xs屏幕上堆叠成一列:col-xs-12.

我想在md屏幕上移动红色img上方的蓝色img(所以从一个col到另一个 - 见下图).我曾经玩过一些javascript和Node.insertBefore(),但如果可能的话,我更喜欢使用Bootsrap4 CSS.

在此输入图像描述

下面是我用一些补救javascript做的第一次尝试 - 有人能指出我正确的方向吗？

function movelogo() {
    var logo = document.getElementById('logo');
    logo.insertBefore(logo, 'next_col');
}


window.addEventListener('resize', movelogo);
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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1 viewport-fit=cover">
    <meta http-equiv="content-type" content="text/html"/>
    <title>Title</title>

    <!-- Bootstrap CSS -->
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css"
          integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

    <!-- Font Awesome CSS -->
    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.3.1/css/all.css"
          integrity="sha384-mzrmE5qonljUremFsqc01SB46JvROS7bZs3IO2EmfFsd15uHvIt+Y8vEf7N7fWAU" crossorigin="anonymous">

    <!-- Custom CSS -->
    <link rel="stylesheet" type="text/css" href="css/main.css">

</head>
<body>

<div id="about" class="container">
    <h1 class="text-center display-3 mb-4">About</h1>
    <div class="row justify-content-center">

        <div class="col-xs-12 col-md-6">

            <img src="https://via.placeholder.com/300/0000FF/808080?text=Logo" class="img-fluid mb-5 mx-auto d-block"
                 id="logo" alt="Logo">

            <p>Metuentes igitur idem latrones Lycaoniam magna parte campestrem cum se inpares nostris fore congressione
                stataria documentis frequentibus scirent, tramitibus deviis petivere Pamphyliam diu quidem intactam sed
                timore populationum et caedium, milite per omnia diffuso propinqua, magnis undique praesidiis
                conmunitam.</p>

            <p> Quid enim tam absurdum quam delectari multis inanimis rebus, ut honore, ut gloria, ut aedificio, ut
                vestitu cultuque corporis, animante virtute praedito, eo qui vel amare vel, ut ita dicam, redamare
                possit, non admodum delectari? Nihil est enim remuneratione benevolentiae, nihil vicissitudine studiorum
                officiorumque iucundius.</p>
        </div>

        <div class="col-xs-12 col-md-6" id="next_col">
            <img src="https://via.placeholder.com/400x600/FF0000/FFFFFF?text=Image" alt="Main image"
                 class="mx-auto d-block img-fluid">
        </div>
    </div>
</div>


<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.3.1.min.js"
        integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js"
        integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49"
        crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js"
        integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy"
        crossorigin="anonymous"></script>
</body>
</html>
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Ale*_*shy 1

这是一种在简单的 JS 中使用媒体查询和 JavaScript来完成此操作的方法，无需更改 HTML，只需id="current_col"在徽标 div 中添加一个即可。

（我sm-6在下面的截图中添加了一个，以便您直接在此处查看结果）

function resize(x) {
  if (x.matches) { // If media query matches
    document.getElementById('next_col').prepend(
      document.getElementById('logo')
    );
  } else {
    if ($("#next_col").children("#logo").length > 0) {
      document.getElementById('current_col').prepend(
        document.getElementById('logo')
      );
    }
  }
}

var x = window.matchMedia("(max-width: 960px)")
resize(x) // Call listener function at run time
x.addListener(resize) // Attach listener function on state changes
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<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1 viewport-fit=cover">
  <meta http-equiv="content-type" content="text/html" />
  <title>Title</title>

  <!-- Bootstrap CSS -->
  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">

  <!-- Font Awesome CSS -->
  <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.3.1/css/all.css" integrity="sha384-mzrmE5qonljUremFsqc01SB46JvROS7bZs3IO2EmfFsd15uHvIt+Y8vEf7N7fWAU" crossorigin="anonymous">

  <!-- Custom CSS -->
  <link rel="stylesheet" type="text/css" href="css/main.css">

</head>

<body>

  <div id="about" class="container">
    <h1 class="text-center display-3 mb-4">About</h1>
    <div class="row justify-content-center">

      <div class="col-xs-12 col-sm-6" id="current_col">

        <img src="https://via.placeholder.com/300/0000FF/808080?text=Logo" class="img-fluid mb-5 mx-auto d-block" id="logo" alt="Logo">

        <p>Metuentes igitur idem latrones Lycaoniam magna parte campestrem cum se inpares nostris fore congressione stataria documentis frequentibus scirent, tramitibus deviis petivere Pamphyliam diu quidem intactam sed timore populationum et caedium, milite
          per omnia diffuso propinqua, magnis undique praesidiis conmunitam.
        </p>

        <p> Quid enim tam absurdum quam delectari multis inanimis rebus, ut honore, ut gloria, ut aedificio, ut vestitu cultuque corporis, animante virtute praedito, eo qui vel amare vel, ut ita dicam, redamare possit, non admodum delectari? Nihil est enim
          remuneratione benevolentiae, nihil vicissitudine studiorum officiorumque iucundius.</p>
      </div>

      <div class="col-xs-12 col-sm-6" id="next_col">
        <img src="https://via.placeholder.com/400x600/FF0000/FFFFFF?text=Image" alt="Main image" class="mx-auto d-block img-fluid">
      </div>
    </div>
  </div>


  <!-- Optional JavaScript -->
  <!-- jQuery first, then Popper.js, then Bootstrap JS -->
  <script src="https://code.jquery.com/jquery-3.3.1.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
  <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
</body>

</html>
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您可以在这里测试它： https: //jsfiddle.net/748sormv/

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6 年，9 月 前
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