Toggleable Dropdown Mobile Menu with KoalaNav.js

KoalaNav.js is a simple Javascript plugin that turns a horizontal navigation menu into a toggleable dropdown menu when the screen size reaches a certain width (breakpoint).

Basic Usage:

Load the required koalanav.css and koalanav.js in the document.

<link rel="stylesheet" href="koalanav.css">
<script src="koalanav.js"></script>

Create a regular multi-level navigation menu with Html lists.

<nav id="demo">
  <ul>
    <li><a href="#">Item 1</a></li>
    <li><a href="#">Item 2</a></li>
    <li><a href="#">Item 3</a>
      <ul>
        <li><a href="#">Item 1</a></li>
        <li><a href="#">Item 2</a></li>
        <li><a href="#">Item 3</a>
          <ul>
            <li><a href="#">Item 1</a></li>
            <li><a href="#">Item 2</a></li>
            <li><a href="#">Item 3</a></li>
            <li><a href="#">Item 4</a>
              <ul>
                <li><a href="#">Item 1</a></li>
                <li><a href="#">Item 2</a></li>
                <li><a href="#">Item 3</a></li>
                <li><a href="#">Item 4</a></li>
              </ul>
            </li>
          </ul>
        </li>
        <li><a href="#">Item 4</a></li>
      </ul>
    </li>
    <li><a href="#">Item 4</a></li>
    <li><a href="#">Item 5</a></li>
  </ul>
</nav>

Initialize the mobile menu with default options.

var nav1 = new KoalaNav("demo");

Available options.

var nav1 = new KoalaNav("demo",{
// The type of icon to use for the mobile toggle button. 
// "hamburger" or "arrow"
btnIcon: 'hamburger',   
// The position of the mobile toggle button icon. 
// "left" or "right"
btnPosition: 'left', 
// The width (in pixels) of when the mobile menu should be displayed
mobileWidth: 500            
});

Add some custom CSS to style the mobile menu.

.navigation-menu--is-mobile li {
  border-top: 1px solid #ddd;
  background: #eee;
}
.navigation-menu--is-desktop li a,
.navigation-menu--is-mobile li a {
  padding: .5em 1em;
  text-decoration: none;
}
.navigation-menu--is-mobile li li {
  border-top: 1px solid #ccc;
  background: #ddd;
}
.navigation-menu--is-mobile li li li {
  border-top: 1px solid #bbb;
  background: #ccc;
}
.navigation-menu--is-mobile li li li li {
  border-top: 1px solid #aaa;
  background: #bbb;
}
.navigation-menu--is-mobile .has-child-menu span { padding: .5em 1em; }
.navigation-menu--is-desktop {
  border-bottom: 1px solid #ccc;
  border-top: 1px solid #ccc;
}
.navigation-menu--is-desktop,
.navigation-menu--is-desktop ul { background: #eee; }
.navigation-menu--is-desktop ul ul { background: #ccc; }
.navigation-menu--is-desktop ul li:hover { background: #ccc; }
.navigation-menu--is-desktop ul ul li:hover { background: #bbb; }
.navigation-menu__mobile-toggle { margin: .75em 1em; }