javascript - 关闭时获取Bootstrap的模态初始数据-*

Question

当显示 Bootstrap 模式时，可以使用以下代码轻松检索关联数据

$('#myModal').on('show.bs.modal', function (e) {
   var id = $(e.relatedTarget).data('id'); 
   alert(id);
}

关闭 Bootstrap 模式时是否可以实现相同的效果？
特别是当通过特定按钮(即确认按钮，而不是任何取消按钮)关闭时？模态内或hidden.bs.modal 事件中的任何按钮似乎都无法使用相关目标。
在下面的 Playground 中，当以类似方式单击 modal 的“yes”时，data-id 属性值应显示在删除按钮下方 data-id 显示模态体:

$(document).ready(function () {
  $('#deleteModal').on('show.bs.modal', function (e) {
      $('#testOutput,#testOutput2').text('');
       var id = $(e.relatedTarget).data('id'); 
    $('#deleteId').text(id || 'id retrieval failed');
  });
  
  $('#deleteModal').on('hidden.bs.modal', function (e) {
      var id = $(e.relatedTarget).data('id'); //does not work
      $('#testOutput2').text(id || '"hidden.bs.modal" id retrieval failed');
  });  
  
  $('#confirmDeleteBtn').click(function (e) {
    var id = $(e.relatedTarget).data('id');  //does not work
    //var id = $(this).closest('.modal').data('id'); //doesnt work neither
    $('#testOutput').text(id || '"btn.close .modal" id retrieval failed');
  });
});

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
<div class="col offset-3">
  <div class="d-flex">
    <button class="mt-4 btn btn-primary" data-toggle="modal" data-target="#deleteModal" data-id="42">delete record 1</button>
    <button class="mt-4 btn btn-primary" data-toggle="modal" data-target="#deleteModal" data-id="123">delete record 2</button>
  </div>
  <h5 class="mt-4 text-danger" id="testOutput"></h5>
  <h5 class="text-danger" id="testOutput2"></h5>
</div>
<div class="modal fade" id="deleteModal" tabindex="-1" role="dialog" aria-labelledby="deleteModalTitle" aria-hidden="true">
    <div class="modal-dialog modal-dialog-centered" role="document">
        <div class="modal-content">
          <div class="modal-header">
            <h5 class="modal-title" id="deleteModalTitle">Confirm delete</h5>
            <button type="button" class="close" data-dismiss="modal">
              <span aria-hidden="true">&times;</span>
            </button>
          </div>
          <div class="modal-body">
            <p>Delete record <span class="font-weight-bold text-danger" id='deleteId'></span>?</p>
          </div>
          <div class="modal-footer">
            <button class="btn btn-primary" type="button" id="confirmDeleteBtn" data-dismiss="modal">Yes</button>
            <button class="btn btn-outline-secondary" id="cancelDeleteBtn"type="button" data-dismiss="modal">Cancel</button>
          </div>
        </div>
    </div>
</div>

请注意，打开按钮的id不是恒定的，即有很多删除按钮能够打开单个对话框。

Answer 1

您可以将data-id属性设置为modal内隐藏的input，并从那里获取id仅有的。尝试下面的代码-

$(document).ready(function () {
  $('#deleteModal').on('show.bs.modal', function (e) {
      $('#testOutput,#testOutput2').text('');
       var id = $(e.relatedTarget).data('id'); 
       $('input.delete-btn-id').val(id);
    $('#deleteId').text(id || 'id retrieval failed');
  });
  
  $('#deleteModal').on('hidden.bs.modal', function (e) {
      var id = $('input.delete-btn-id').val(); //it's working now
      $('#testOutput2').text(id || '"hidden.bs.modal" id retrieval failed');
  });  
  
  $('#confirmDeleteBtn').click(function (e) {
    var id = $('input.delete-btn-id').val();  //it's working now
    $('#testOutput').text(id || '"btn.close .modal" id retrieval failed');
  });
});

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
<div class="col offset-3">
  <div class="d-flex">
    <button class="mt-4 btn btn-primary" data-toggle="modal" data-target="#deleteModal" data-id="42">delete record 1</button>
    <button class="mt-4 btn btn-primary" data-toggle="modal" data-target="#deleteModal" data-id="123">delete record 2</button>
  </div>
  <h5 class="mt-4 text-danger" id="testOutput"></h5>
  <h5 class="text-danger" id="testOutput2"></h5>
</div>
<div class="modal fade" id="deleteModal" tabindex="-1" role="dialog" aria-labelledby="deleteModalTitle" aria-hidden="true">
    <div class="modal-dialog modal-dialog-centered" role="document">
        <div class="modal-content">
          <div class="modal-header">
            <h5 class="modal-title" id="deleteModalTitle">Confirm delete</h5>
            <button type="button" class="close" data-dismiss="modal">
              <span aria-hidden="true">&times;</span>
            </button>
          </div>
          <div class="modal-body">
            <p>Delete record <span class="font-weight-bold text-danger" id='deleteId'></span>?</p>
            <input type="hidden" val="" class="delete-btn-id"/>
          </div>
          <div class="modal-footer">
            <button class="btn btn-primary" type="button" id="confirmDeleteBtn" data-dismiss="modal">Yes</button>
            <button class="btn btn-outline-secondary" id="cancelDeleteBtn"type="button" data-dismiss="modal">Cancel</button>
          </div>
        </div>
    </div>
</div>