Steps to ensure a dropdown menu remains expanded when its nested menu is selected

Check out this dropdown list here, but the issue arises when clicking on a nested menu item such as "Books Registration". Once that page loads, the dropdown menu collapses like shown here. Here's a snippet of the dropdown code:

<ul class="nav nav-second-level">
<li id="BooksRegistration">
<a href="BooksRegistration.php"><i class="fa fa-edit"></i> Books Registration </a>
</li>
<li id="AuthorRegistration">
<a href="AuthorRegistration.php"><i class="glyphicon glyphicon-user"></i> Author Registration </a>
</li>
<li id="MembersRegistration">
<a href="MembersRegistration.php"><i class="glyphicon glyphicon-user"></i> Members Registration </a>
</li>

<li>
<a href="#">Second Level Link<span class="fa arrow"></span></a>
<ul class="nav nav-third-level">
<li>

I am looking for a solution to keep the dropdown list expanded when one of the nested pages in the list is loaded. I specifically need a Javascript code solution since jQuery is not an option for me.

javascripthtmlcssdrop-down-menu

Answer №1

For those using browsers with the inspect element feature enabled, you can easily identify changes in CSS classes when interacting with dropdown lists. By right-clicking on a dropdown list and selecting "inspect" (in Chrome), you can see which classes are being modified. Simply copy these classes and add them to each page within the dropdown list simultaneously. Check out the example below: https://i.stack.imgur.com/3cMBi.png

The highlighted classes or attributes in the style section indicate the changes made when expanding the dropdown list. Copy these attributes and apply them to all pages within the dropdown list for consistent styling.

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