What is the best way to toggle the active class on a ul list?

After clicking, the active class remains on the original "li" instead of changing as it should. I've tried modifying the code but haven't been able to find a solution. Can someone please review what I might have missed? It seems like there's something specific to my code that I'm missing. I looked into "adding/removing an active class for UL list with jQuery," but that didn't solve the issue. Any help in pinpointing the error in my code would be greatly appreciated.

HTML:

<div class="collapse navbar-collapse navbar-ex1-collapse">
    <ul class="nav navbar-nav navbar-right">
        <li class="active"><a href="#juk">About</a></li>
        <li><a onclick="myFunction1()">Development</a></li>
        <li><a href="http://docs.kde.org/stable/en/kdemultimedia/juk/index.html">Wiki/Documentation</a></li>
        <li><a onclick="myFunction()">Screenshots</a></li>
        <li class="dropdown">
        <a data-toggle="dropdown" class="dropdown-toggle" href="#">Releases </a>
        <ul class="dropdown-menu">
            <li><a href="ftp://ftp.kde.org/pub/kde/stable/latest">JuK Latest</a></li>
            <li><a href="http://developer.kde.org/~wheeler/files/src/juk-1.95a.tar.gz">JuK 1.95</a></li>
            <li><a href="http://developer.kde.org/~wheeler/files/src/juk-1.1.tar.gz">JuK 1.1</a></li>
            <li><a href="http://developer.kde.org/~wheeler/files/src/juk-1.0-1.tar.gz">JuK 1.0</a></li>
        </ul>
        </li>
        <li><a href="#contactus">Contact Us</a></li>
    </ul>
</div>

JavaScript:

$(function() {
    ( 'ul.nav.navbar-nav.navbar-right li' ).on( 'click', function() {
        $( this ).parent().find( 'li.active' ).removeClass( 'active' );
        $( this ).addClass( 'active' );
    });
});
javascriptjqueryhtmlcss

Answer №1

You have mistakenly targeted the wrong <li> element in the .on('click') event

Your initial selector was:

$( 'ul.nav navbar-nav navbar-right li' )

This will search for a li that is a child of navbar-right which is a child of navbar-nav which is also a child of ul.nva.

The correct selector should be:

$( 'ul.nav.navbar-nav.navbar-right li' )

Note the space before the li? This indicates that it is a descendant of the ul element with multiple classes.

I understand that you followed the class list from the HTML DOM element, but remember to avoid spaces in jQuery selectors when targeting an element with multiple classes.

$(function() {
  $('ul.nav.navbar-nav.navbar-right li').on('click', function() {
    $(this).parent().find('li.active').removeClass('active');
    $(this).addClass('active');
  });
});
.active {
  background-color: gold;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.10.1/jquery.min.js"></script>
<div class="collapse navbar-collapse navbar-ex1-collapse">
  <ul class="nav navbar-nav navbar-right">
    <li class="active"><a href="#juk">About</a></li>
    <li><a>Development</a></li>
    <li><a href="#">Wiki/Documentation</a></li>
    <li><a >Screenshots</a></li>
    <li class="dropdown">
      <a data-toggle="dropdown" class="dropdown-toggle" href="#">Releases </a>
      <ul class="dropdown-menu">
        <li><a href="#">JuK Latest</a></li>
        <li><a href="#">JuK 1.95</a></li>
        <li><a href="#">JuK 1.1</a></li>
        <li><a href="#">JuK 1.0</a></li>
      </ul>
    </li>
    <li><a href="#contactus">Contact Us</a></li>
  </ul>
</div>

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