The submenu effect using .slideDown() won't cause the main li elements below it to be pushed

After experimenting with creating a slideDown submenu for my navigation bar, I finally achieved the desired effect. However, when I integrated the final code into my main code (originally tested and created with only one tab on codepen), the submenu slid down over the main li underneath the one clicked to reveal the submenu. Additionally, I noticed that clicking on a different li in the main nav did not hide the menu.

Here is the link to my complete side navbar on CodePen: http://codepen.io/PorototypeX/pen/swvtc

Some users asked me to post the code here as well, so please excuse the length if it's not to your liking.

HTML:

<div class="backing">

  <ul class="navbar" id="topnav">
    <li class="active">

       <a>HOME</a>

      <!-- Below this is the code for the submenu. For now I just put in example names for testing. Eventually, I will have a submenu for each li after getting this working on the first li -->

       <ul class="menu-home">
         <li><a href="#"><span>Home</span></a></li>
         <li><a href="#"><span>About</span></a></li>
         <li><a href="#"><span>Info</span></a></li>
       </ul>
    </li>
   <!-- Rest of the list items omitted for brevity -->
  </ul>

  <!-- --------------------------------------------------------------------------------------- -->

</div>

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>

CSS:

/* Your CSS styles go here */

JQuery:

// Jquery script goes here

Answer №1

Removing the specified height: 50px from .navbar > li resolves the issue or alternatively switching it to min-height would do the trick.

I initially found it perplexing because visually, it appeared as if the submenu had a position: absolute, however, it was actually linked to the z-index property. The content within the li is contained causing overflow, but the z-index places it above the other list items.

Check out this CodePen example for reference

Answer №2

This function combines the actions of slideUp and slideDown with changing the active li:

$("#topnav a").click(function(){
 var el = $(this).parent();
 if(el.parent().hasClass('navbar')){
    $(this).next().slideDown();
    var active = el.siblings('.active');
    active.children('ul:first').slideUp();
    active.removeClass('active');
    el.addClass('active');
 }
});

Check out a live demonstration here.

Answer №3

A big thank you to @BotskoNet for assisting me with the issue of li height and also to @Dudu for helping with the submenu not closing when other li elements are clicked on. After tweaking around with @dudu's code, I managed to resolve the problem of the active class triggering the slideUp and slideDown functions on the submenu.

Here is the solution that I came up with:

 $("#topnav a").click(function(){
    var el = $(this).parent();
    if(el.hasClass('active') &&      $(this).next().is(':visible')){
      var active = el.siblings('.active');
      $(this).next().slideUp();
    }
    else if(el.hasClass('active') &&      !$(this).next().is(':visible')){
      var active = el.siblings('.active');
      $(this).next().slideDown();
    }
    else if(!el.hasClass('active')){
      $(this).next().slideDown();
      var active = el.siblings('.active');
      active.children('ul:first').slideUp();
      active.removeClass('active');
      el.addClass('active');
    }
});

You can check out the live demo to see it in action (only the first tab): http://codepen.io/PorototypeX/pen/swvtc

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