Use slideToggle to expand & collapse list items

Question

For a nested list which expands/collapses on click using, how to prevent the "toggle" on the lowest-level item? eg The last item in the list is a hyperlink, but clicking collapses the list rather than opening the link.

jQuery('.intranet ul').hide();

jQuery('.intranet-folder').click(function() {
  jQuery(this).children("ul").slideToggle();
  return false;
});

.intranet-folder {cursor: pointer;}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<ul class="intranet">
  <li class="intranet-folder">Years
    <ul>
      <li class="intranet-folder">2015
        <ul>
          <li class="intranet-folder">January
            <ul>
              <li><a href="#">Click to download file</a></li>
            </ul>
          </li>
          <li class="intranet-folder">February
            <ul>
              <li><a href="#">Click to download file</a></li>
            </ul>
          </li>
        </ul>
      </li>
      <li class="intranet-folder">2014
        <ul>
          <li class="intranet-folder">November
            <ul>
              <li><a href="#">Click to download file</a></li>
            </ul>
          </li>
        </ul>
      </li>
    </ul>
  </li>
</ul>

Answer 1

For reference, I found an answer at how to make an expandable list.

$(function prepareList() {
	$('#expList').find('li:has(ul)').unbind('click').click(function(event) {
		if(this == event.target) {
			$(this).toggleClass('expanded');
			$(this).children('ul').toggle('medium');
		}
		return false;
	}).addClass('collapsed').removeClass('expanded').children('ul').hide();
 
	//Hack to add links inside the cv
	$('#expList a').unbind('click').click(function() {
		window.open($(this).attr('href'));
		return false;
	});
	//Create the button functionality
	$('#expandList').unbind('click').click(function() {
		$('.collapsed').addClass('expanded');
		$('.collapsed').children().show('medium');
	})
	$('#collapseList').unbind('click').click(function() {
		$('.collapsed').removeClass('expanded');
		$('.collapsed').children().hide('medium');
	})
});

#expList ul, li {
  list-style: none;
  cursor: pointer;
}
		
#expList li {
	line-height:140%;
	text-indent:0px;
	background-position: 1px 8px;
	background-repeat: no-repeat;
}

#expList .collapsed:before {
	font-family: FontAwesome;
   content: "\f07b\00a0";
}

#expList .expanded:before {
   content: '\f07c\00a0';
}

<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.1/css/font-awesome.min.css" rel="stylesheet"/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<ul class="intranet" id="expList">
  <li class="intranet-folder">Years
    <ul>
      <li class="intranet-folder">2015
        <ul>
          <li class="intranet-folder">January
            <ul>
              <li><a href="#">Click to download file</a></li>
            </ul>
          </li>
          <li class="intranet-folder">February
            <ul>
              <li><a href="#">Click to download file</a></li>
            </ul>
          </li>
        </ul>
      </li>
      <li class="intranet-folder">2014
        <ul>
          <li class="intranet-folder">November
            <ul>
              <li><a href="#">Click to download file</a></li>
            </ul>
          </li>
        </ul>
      </li>
    </ul>
  </li>
</ul>