javascript - Bootstrap 中延迟显示崩溃？

Question

如何在 Bootstrap 4 中延迟显示折叠元素？

例如，您是否延迟显示下面示例中的“链接 href”按钮的内容？

<p>
  <a class="btn btn-primary" data-toggle="collapse" href="#collapseExample" aria-expanded="false" aria-controls="collapseExample">
    Link with href
  </a>

<div class="collapse" id="collapseExample">
    <div class="card card-block">
          Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus          richardson ad squid. Nihil anim keffiyeh helvetica, craft beer labore wes          anderson cred nesciunt sapiente ea proident.
    < div>
</div>

Answer 1

在我的解决方案中，您可以在触发器元素上使用 data-delayed-toggle 和 data-delay 属性来配置折叠行为:

$('[data-delayed-toggle="collapse"]').on('click', function(e) {

      var delay = $(this).data('delay') || 1000;
      var $target = $($(this).attr("href"));

      window.setTimeout(function() {
        
        if ($target.hasClass('show'))
            $target.collapse('hide');
         else
            $target.collapse('show');
          }, delay);

      })

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js"></script>

<p>
  <a class="btn btn-primary" data-delayed-toggle="collapse" href="#collapseExample" data-delay="300">
    Link with href
  </a>
  <div class="collapse" id="collapseExample">
    <div class="card card-block">
      Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus richardson ad squid. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident.
      < div>
    </div>