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<!--Pattern HTML-->
<div id="pattern" class="pattern">
  	<!--Begin Pattern HTML-->
		<nav id="menu" class="menu" role="navigation">
			<ul>
				<li class="priority"><a href="#">Link #1</a></li>
				<li class="priority"><a href="#">Link #2</a></li>
				<li class="priority"><a href="#">Link #3</a></li>
				<li><a href="#">Link #4</a></li>
				<li><a href="#">Link #5</a></li>
				<li><a href="#">Link #6</a></li>
				<li><a href="#">Link #7</a></li>
				<li><a href="#">Link #8</a></li>
			</ul>
		</nav>
	</div>
	<!--End Pattern HTML-->
	
	<div class="container">	
		<section class="pattern-description">
			<h1>Priority+ Navigation</h1>
			<p>The <a href="http://justmarkup.com/log/2012/06/19/responsive-multi-level-navigation/">Priority+ pattern</a> was coined by <a href="http://justmarkup.com/">Michael Scharnagl</a> (<a href="https://twitter.com/justmarkup">@justmarkup</a>) to describe navigation that exposes what&#8217;s deemed to be the most important navigation elements and tucks away less important items behind a &#8220;more&#8221; link. The less important items are revealed when the user clicks the &#8220;more&#8221; link.</p>
<h3>Pros</h3>
<ul>
<li><strong>Relatively simple to implement</strong> &#8211; The logic required to execute this technique isn&#8217;t terribly complicated. It&#8217;s just a basic show/hide toggle to reveal the hidden navigation items.</li>
<li><strong>(hopefully) exposes the most accessed features</strong> &#8211; it&#8217;s hopefully revealing the three or four things the majority of users frequently access anyways.</li>
</ul>
<h3>Cons</h3>
<ul>
<li><strong>Hides potentially important nav items</strong> &#8211; what you may deem most important may not be what&#8217;s important to your users. Burying nav items means having to make some assumptions, and while it hopefully works out for most users, it might also piss some people off.</li>
<li><strong>Doesn&#8217;t work well with multi-level navigation</strong> &#8211; The priority+ pattern seems good for navs that have a lot of items at the same hierarchy level, but unfortunately it doesn&#8217;t seem to solve the sub-nav dilemma.</li>
</ul>
<h3>Resources</h3>
<ul>
<li><a href="http://justmarkup.com/log/2012/06/19/responsive-multi-level-navigation/">Responsive Multi Level Navigation &mdash; let's try.</a></li>
<li><a href="http://justmarkup.com/lab/juma/nav/example2/">Priority+ Demo</a></li>
</ul>
<h3>In the Wild</h3>
<ul>
<li><a href="http://www.wm.edu/">William and Mary</a></li>
<li><a href="http://m.usatoday.com/sports">USA Today&#8217;s mobile site section pages</a> don&#8217;t follow this exactly, but expose the most important categories by default and an arrow or swipe reveals the remaining navigation items. Pretty slick.</li>
</ul>		</section>
		<footer role="contentinfo">   
			<div>
				<nav id="menu">
					<a href="https://bradfrost.github.com/this-is-responsive/patterns.html">&larr;More Responsive Patterns</a>
				</nav>
			</div>
		</footer>
	</div>
.menu li {
  display: inline-block;
  margin: 0 0.25em;
}
.menu li.hidden {
  display: none;
}
.menu li a {
  display: block;
  padding: 1em 0.5em;
}

@media screen and (min-width: 48.25em) {
  body:after {
        content: 'large';
        display: none;
    }
    #toggler {
      display: none;
    }
}
/*
  	
		Warning: extremely sloppy code.
		
		*/
		$(document).ready(function() {
			var $menu = $('#menu'),
				$menuList = $menu.find('ul'),
		  		bp = window.getComputedStyle(document.body,':after').getPropertyValue('content'),
		  		$toggler;
		  	
		  	
		  	if(!$('#toggler').length) {
				$('<li class="priority" id="toggler"><a href="#">More+</a></li>').appendTo($menuList);
				$toggler = $('#toggler');
			}
			
		  	
		  	function checkSize() {
		  		if(bp=='large') {
		  			showNav();
			  	} else {
			  		hideNav();
			  		$toggler.text('More+');
			  	}
		  	}
		  	
		  	function showNav() {
		  		$menu.find('li:not(.priority)').removeClass('hidden');
		  	}
		  	
		  	function hideNav() {
		  		$menu.find('li:not(.priority)').addClass('hidden');
			  	
		  	}
			
			function changeNavLabel() {
				$toggler.toggleClass('active');
				if($toggler.hasClass('active')) {
					$toggler.text('Less-');
					showNav();
				} else {
					$toggler.text('More+');
					hideNav();
				}
			}
			
			$menu.on("click", "#toggler", function(e){ //Clicking toggle
				e.preventDefault();
				changeNavLabel();
			});
		
			$(window).resize(function() { //On Window resize
				bp = window.getComputedStyle(document.body,':after').getPropertyValue('content');
				checkSize();
				togglerVisibility();
			});
			
			checkSize();
			togglerVisibility();
		});
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