为什么引导程序4模态不显示使用iframe的实例？

Question

我正在尝试在Bootstrap 4模式下查看html，它显示了所有内容，但未显示navbar ul li a！为什么会这样？我在那里找不到任何解决方案，请帮助我！（我要模式全屏显示）

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"></script>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" rel="stylesheet"/>
<!-- Button trigger modal -->
  <button type="button" class="btn btn-primary btn-lg" data-toggle="modal" data-target="#modelId">
    Launch
  </button>
  
  <!-- Modal -->
  <div class="modal fade" id="modelId" tabindex="" role="dialog" aria-labelledby="modelTitleId" aria-hidden="true">
    <div class="modal-dialog modal-xl" role="document">
     
      <div class="modal-content">

        <div class="modal-header">
          <h5 class="modal-title">Modal title</h5>
            <button type="button" class="close" data-dismiss="modal" aria-label="Close">
              <span aria-hidden="true">&times;</span>
            </button>
        </div>
          <iframe name="iframe1" width="100%" height="820px" src="home.html" frameborder="1" scrolling="yes"></iframe>
      </div>
    </div>
  </div>

Answer 1

我在计算机上尝试过，并且工作正常。

<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" rel="stylesheet"/>

<!-- Button trigger modal -->
<button type="button" class="btn btn-primary btn-lg" data-toggle="modal" data-target="#modelId">
  Launch
</button>

<!-- Modal -->
<div class="modal fade" id="modelId" tabindex="" role="dialog" aria-labelledby="modelTitleId" aria-hidden="true">
  <div class="modal-dialog modal-xl" role="document">

    <div class="modal-content">

      <div class="modal-header">
        <h5 class="modal-title">Modal title</h5>
          <button type="button" class="close" data-dismiss="modal" aria-label="Close">
            <span aria-hidden="true">&times;</span>
          </button>
      </div>
      <div class="modal-body">
        <iframe name="iframe1" width="100%" height="820px" src="https://nishargshah.com" frameborder="1" scrolling="yes"></iframe>
      </div>
    </div>
  </div>
</div>
  
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"></script>

Answer 2

请确保您的home.html存在并且可以访问。您应该添加<div class="modal-body">组件来包装iframe，如下所示：

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"></script>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" rel="stylesheet"/>
<!-- Button trigger modal -->
  <button type="button" class="btn btn-primary btn-lg" data-toggle="modal" data-target="#modelId">
    Launch
  </button>
  
  <!-- Modal -->
  <div class="modal fade" id="modelId" tabindex="" role="dialog" aria-labelledby="modelTitleId" aria-hidden="true">
    <div class="modal-dialog modal-xl" role="document">
     
      <div class="modal-content">

        <div class="modal-header">
          <h5 class="modal-title">Modal title</h5>
            <button type="button" class="close" data-dismiss="modal" aria-label="Close">
              <span aria-hidden="true">&times;</span>
            </button>
        </div>

        <div class="modal-body">
          <iframe name="iframe1" width="100%" height="820px" src="home.html" frameborder="1" scrolling="yes"></iframe>
        </div>
      </div>
    </div>
  </div>