我使用的是Bootstrap 5 Modal弹出窗口，我在弹出窗口中嵌入了一个IFRAME，一切都运行得很好，但问题是，当我关闭弹出窗口时，视频没有停止/暂停，甚至弹出窗口也关闭了，它仍然在后台运行，我试图通过jQuery阻止它，但不知道为什么它不工作. 有人能告诉我在弹出窗口关闭时如何暂停/停止视频吗？
$(document).ready(function() {
var url = $("#how-it-works-video").attr('src');
$("#exampleModal").on('hide', function() {
$("#how-it-works-video").attr('src', '');
});
$("#exampleModal").on('show', function() {
$("#how-it-works-video").attr('src', url);
});
});<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<!-- Button trigger modal -->
<a class="btn btn-primary" type="button" data-bs-toggle="modal" data-bs-target="#exampleModal">
How it works
</a>
<!-- Modal -->
<div class="modal fade" id="exampleModal" tabindex="-1" aria-labelledby="exampleModalLabel" aria-hidden="true">
<div class="modal-dialog modal-dialog-centered">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="staticBackdropLabel">Modal title</h5>
<button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
</div>
<div class="modal-body">
<iframe id="how-it-works-video" width="100%" height="100%" src="https://www.youtube.com/embed/BrD3abCyuzw" title="YouTube video player" frameborder="5" allowfullscreen></iframe>
</div>
</div>
</div>
</div>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p" crossorigin="anonymous"></script>编辑:我注意到视频不能在Stackoverflow代码编辑器中播放，但如果您使用任何其他代码编辑器，它将会正常工作