JavaScript Toggle Side Navigation

by Taufik Nurrohman

HTML

<div id="outer-wrapper">
	<section id="nav">
		<a href="#nav" id="toggle-nav-btn" title="Show Navigation">&equiv;</a>
		<div class="inner">
			<ul class="menu">
				<li><a href="#">Home</a></li>
				<li><a href="#">About</a></li>
				<li><a href="#">Archive</a></li>
				<li><a href="#">Contact</a></li>
			</ul>
			<p>Etc... etc... etc...</p>
		</div>
	</section>
	<section id="main">
		<h2>Example Heading</h2>
		<p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam erat volutpat. Ut wisi enim ad minim veniam, quis nostrud exerci tation ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulla facilisis at vero eros et accumsan et iusto odio dignissim qui blandit praesent luptatum zzril delenit augue duis dolore te feugait nulla facilisi. Nam liber tempor cum soluta nobis eleifend option congue nihil imperdiet doming id quod mazim placerat facer possim assum. Typi non habent claritatem insitam; est usus legentis in iis qui facit eorum claritatem. Investigationes demonstraverunt lectores legere me lius quod ii legunt saepius. Claritas est etiam processus dynamicus, qui sequitur mutationem consuetudium lectorum. Mirum est notare quam littera gothica, quam nunc putamus parum claram, anteposuerit litterarum formas humanitatis per seacula quarta decima et quinta decima. Eodem modo typi, qui nunc nobis videntur parum clari, fiant sollemnes in futurum.</p>
		<p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam erat volutpat. Ut wisi enim ad minim veniam, quis nostrud exerci tation ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulla facilisis...

CSS

* {
  margin:0;
  padding:0;
}

*:focus {outline:none}

body {
  font:normal normal 14px/1.4 Arial,Sans-Serif;
  color:#333;
  background-color:#ddd;
}

/* Outer wrapper */
#outer-wrapper {
  background-color:black;
  overflow:hidden;
}

/* Left sidebar */
#nav {
  float:left;
  width:2.8em;
  color:#999;
  position:relative;
  -webkit-transition:width .2s ease-out;
  -moz-transition:width .2s ease-out;
  -ms-transition:width .2s ease-out;
  -o-transition:width .2s ease-out;
  transition:width .2s ease-out;
}

#nav .inner {
  padding:1em;
  width:200px;
  display:none;
}

.menu,
.menu li {
  margin:0 0;
  padding:0 0;
  list-style:none;
}

.menu {margin:2em -1em 1em}

.menu a {
  display:block;
  font-weight:bold;
  color:white;
  text-decoration:none;
  height:2.4em;
  line-height:2.4em;
  padding:0 1em;
}

.menu a:hover {background-color:#111}

/* Right sidebar */
#main {
  background-color:white;
  margin-left:2.8em; /* Same with the `#nav` width */
  padding:1em 2em;
  -webkit-transition:margin-left .2s ease-out;
  -moz-transition:margin-left .2s ease-out;
  -ms-transition:margin-left .2s ease-out;
  -o-transition:margin-left .2s ease-out;
  transition:margin-left .2s ease-out;
}

/* Toggle navigation button */
#toggle-nav-btn {
  text-decoration:none;
  font-size:200%;
  line-height:100%;
  color:#666;
  display:block;
  position:absolute;
  top:.2em;
  right:.4em;
}

#toggle-nav-btn:hover {color:#888}

/* When the `.menu-is-visible` class applied */
.menu-is-visible #nav {width:200px}
.menu-is-visible #nav .inner {display:block}
.menu-is-visible #main {margin-left:200px} /* Same with the `.menu-is-visible #nav` width */
.menu-is-visible #toggle-nav-btn {color:#aaa}

/* Details. Ignore this! */
h2,p {margin-bottom:1em}

JavaScript

(function() {

	var page = document.body,
		btn = document.getElementById('toggle-nav-btn');

	btn.onclick = function() {

		// Toggle the `.menu-is-visible` class to the <body> tag based on `#toggle-btn-nav` click event
		page.className = (/(^| )menu-is-visible( |$)/.test(page.className)) ?
			page.className.replace(/menu-is-visible/,"") :
				page.className + " menu-is-visible";

		// Toggle the toggle navigation title too...
		this.title = (this.title == "Show Navigation") ?
			"Hide Navigation" :
				"Show Navigation";

		return false;

	};

})();