这是你用三元运算符做的

$('#myModal').modal( variable === 'someString' ? 'show' : 'hide');

下面的代码用于在openModal()函数上打开modal，在closemmodal()上关闭modal:

      function openModal() {
          $(document).ready(function(){
             $("#myModal").modal();
          });
      }

     function closeModal () {
          $(document).ready(function(){
             $("#myModal").modal('hide');
          });  
      }

/* #myModal是modal弹出窗口的id */

HTML

<!-- Button trigger modal -->
<button type="button" class="btn btn-primary btn-lg">
  Launch demo modal
</button>

<!-- Modal -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
  <div class="modal-dialog">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
        <h4 class="modal-title" id="myModalLabel">Modal title</h4>
      </div>
      <div class="modal-body">
        ...
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
        <button type="button" class="btn btn-primary">Save changes</button>
      </div>
    </div>
  </div>
</div>

JS

$('button').click(function(){
$('#myModal').modal('show');
});

演示JSFIDDLE

这是一个没有jQuery的Bootstrap v5的代码。

let myModal = new bootstrap.Modal(document.getElementById('myModal'), {});
myModal.show();

Demo

这是一个以编程方式打开页面加载模式的代码和盒子演示。

https://idu6i.csb.app/

Refs

https://getbootstrap.com/docs/5.0/components/modal/#via-javascript https://getbootstrap.com/docs/5.0/components/modal/#show

这是你用三元运算符做的

$('#myModal').modal( variable === 'someString' ? 'show' : 'hide');

你不应该在触发模式的元素(比如按钮)中写入data-toggle="modal"，你可以手动显示模式:

$('#myModal').modal('show');

和藏在一起:

$('#myModal').modal('hide');