Utilizing JavaScript/jQuery to activate a Bootstrap navbar post-page load

Having trouble triggering Bootstrap's navbar with plain JavaScript/jQuery while using Bootstrap 3.3.6 and jQuery 1.11.3.

The data structure provided for my application cannot be modified in terms of adding classes or ids.

    <ul>
      <li><a href="http://google.de">Stuff</a>
      <ul>
          <li><a href="#">Action</a></li>
          <li><a href="#">Something else here</a></li>
          <li><a href="#">One more link</a></li>
      </ul></li>
      <li><a href="#">Mgmt Reports</a></li>
      <li><a href="#">Notices</a></li>
      <li><a href="#">Liens</a>
        <ul>
          <li><a href="#">Action</a></li>
          <li><a href="#">Another action</a></li>
          <li><a href="#">Something else here</a></li>
          <li><a href="#">Separated link</a></li>
          <li><a href="#">One more separated link</a>
            <ul>
              <li><a href="#">Action</a></li>
              <li><a href="#">Another action</a></li>
              <li><a href="#">A long sub menu</a>
                <ul>
                  <li><a href="#">Menu item 1</a></li>
                  <li><a href="#">Menu item 2</a></li>
                  <li><a href="#">Menu item 3</a></li>
                </ul>
              </li>
              <li><a href="#">Another link</a></li>
              <li><a href="#">One more link</a></li>
            </ul>
          </li>
        </ul>
      </li>
    </ul>

Steps Taken So Far:

  1. Added the class dropdown-menu to all ul tags. Done using

    $("ul ul").addClass("dropdown-menu");

  2. Added the classes nav navbar-nav to the outermost ul tag. Used

    $("ul:first").addClass("nav navbar-nav");

  3. Inserted a surrounding div with classes collapse navbar-collapse.

  4. Integrated jQuery Smartmenus for multilevel navigation bar functionality.

The jQuery code does successfully add the necessary classes and functions as required:

$("ul:first").addClass("nav navbar-nav");
$("ul ul").addClass("dropdown-menu");
$("ul:first").smartmenus({
    subIndicatorsText: '',
    subIndicatorsPos: 'append',
});
$(".sub-arrow").addClass("caret");

EDIT

The bootstrap navbar is activated, but its behavior differs from manually added CSS classes. The desired functionality seems to be lost when applied through JavaScript.

Example 1: On mobile devices, the normal Bootstrap navbar prevents clicking on TopMenu items. Clicking once opens the SubMenu, while the second click triggers the link. This behavior is not replicated when classes are added via JavaScript.

Example 2: Manually added classes display dropdown submenus, whereas jQuery-added classes show rightward submenu opening. Despite identical code output, functionality differs.

Question: What steps am I overlooking here? How can I effectively trigger the Bootstrap navbar using only JavaScript or jQuery without altering the HTML markup and preserving full functionality?

Answer №1

Regrettably, I have not been able to figure out how to implement a "tree-control" using Bootstrap Collapse. Typically, Bootstrap Collapse is used for creating "accordion" controls instead. Although theoretically a "tree-control" could be achieved with Bootstrap collapse by utilizing panel-groups and specifying data-parent, it does not align with the provided HTML that you mentioned cannot be edited.

I stumbled upon this resource, which seems quite promising in transforming your unmodifiable ul-struct into a functional tree-control. I attempted to create a script that could dynamically update your structure to make this work, but unfortunately, my efforts were unsuccessful. While I am unable to dedicate more time to it, you can access my attempt here if you wish to explore further. I hope this information proves helpful to you.

Furthermore, there are two significant issues present in the content you shared. Firstly, on the third line of the provided HTML, there is an extraneous closing tag for the li element. It seems that there is another closing tag later in the HTML for the same element, indicating that the one on line 3 should be removed in order for your li to properly encapsulate the subsequent ul. It is crucial to rectify this error as it could potentially disrupt your project.

Additionally, it appears that the Bootstrap directives of collapse and dropdown-menu do not integrate smoothly together. Through my testing, whenever I applied both classes to an element, the collapse functionality ceased to respond to the data-toggle. My recommendation would be to eliminate the dropdown-menu aspect from your approach, as it seems redundant in this context.

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