How to trigger a Bootstrap modal using JavaScript instead of a button

Is it possible to trigger and open a bootstrap modal using JavaScript without the use of a button? I need the modal to be opened based on a different JavaScript program's logic.

JAVASCRIPT:

<script>
  //...
  document.getElementById("modalElement").style.visibility = ""; 
</script>

HTML:

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

<!-- Modal -->
<div id="modalElement" class="modal fade" id="exampleModalCenter" tabindex="-1" role="dialog" aria-labelledby="exampleModalCenterTitle" 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="exampleModalLongTitle">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">
        ...
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
        <button type="button" class="btn btn-primary">Save changes</button>
      </div>
    </div>
  </div>
</div>

Answer №1

To display a modal, utilize the method .modal('show').

When using jQuery, the syntax will look like this: $('#modalElement').modal('show')

Quoted from the Bootstrap Modal API

Answer №2

This code snippet is compatible with Bootstrap version 5.

const modal = new bootstrap.Modal(document.querySelector("#exampleModalCenter"));
modal.show();

Answer №3

This code snippet is specifically tailored for Bootstrap 5 but can also be compatible with older versions.

const modal = document.querySelector(".modal");
modal.classList.add("show");
modal.style.display = "block";

Answer №4

let modalElem = document.querySelector('#modalID');
if(modalElem){ 
    let newModal = new bootstrap.Modal(modalElem); newModal.show(); 
}

Answer №5

Learn how to utilize JavaScript for creating modals:

    Utilize the following code snippet to create a modal element using JavaScript: var modalElement = new bootstrap.Modal(document.getElementById('modalElement'))

For more information on creating modals via JavaScript, visit: https://getbootstrap.com/docs/5.0/components/modal/#via-javascript

If you are calling it asynchronously, consider using this approach:

    In cases of asynchronous calls, use: const modalElement = bootstrap.Modal.getOrCreateInstance('#modalElement');
    ModalElement.show();

To learn more about Bootstrap's getOrCreateInstance function, follow this link: https://getbootstrap.com/docs/5.0/components/modal/#getorcreateinstance

By the way, ensure that your element has only one id attribute, as having two can cause issues.

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