CODEWITHSUNDEEP
javascripthtmlangularbootstrap-4bootstrap-modal
akcasoy
akcasoy

Reputation: 7215

How to make just a part of html 'tabbable'? (Modal Dialog)

I have an Angular App and a custom Modal Dialog implementation. How can I limit the 'tabbablity' of the page so that i can just tab through the Modal, and not everything else in background?

I have set aria-hidden="true" for all other elements directly under the body tag, and thought that has to handle that, but no success. tabindex="-1" also did not work..

Actually I want the exact tab-behaviour of this bootstrap modal: https://getbootstrap.com/docs/4.0/components/modal/

Click: "launch demo modal" and tab through the modal elements..

How can I achieve this?

Edit: I look at the bootstrap modal, and they do not set anything to other elements, but just to the modal container div (with class="modal fade show") tabindex="-1". And after the last element in modal, tab sets focus to this modal container div. After that the focus is set again to the first modal element. In my case tabindex="-1" strangely does not bring anything, after the last element focus jumps to the Browser's URL Input field and goes on.

Upvotes: 1

Views: 1074

Answers (1)

Camille
Camille

Reputation: 2531

I dont know what code you have...but this tabindex behavior works well with bootstarp example.

.modal-backdrop {
   background-color: transparent !important;
}
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/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://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>


<!-- Button trigger modal -->
<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal">
  Launch demo modal (with tab only on modal elements)
</button>

<!-- Modal -->
<div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <h5 class="modal-title" id="exampleModalLabel">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">
        coucou
      </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>

<br><br><br>

<!-- Button trigger modal -->
<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal2">
  Launch demo modal (with tab on all document elements)
</button>

<!-- Modal -->
<div class="modal fade" id="exampleModal2" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <h5 class="modal-title" id="exampleModalLabel">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">
        coucou
      </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>

Upvotes: 1

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