I have a responsive design that when viewed on a device less than 600px
wide, uses drop down multi-level navigation. It is nested inside a header that is set to position: fixed
. The problem is, that when you drop down the menu the menu overflows downward and does not scroll (because the header is fixed), so the tabs are not visible. Is there a way (using Javascript, jQuery or PHP) to dynamically set it so that when the drop down menu (by way of clicking on the hamburger menu icon in the top right or left), it changes the header's position from fixed
to relative
?
A good example would be www.dribbble.com. When it's less than 800px
wide, the header is sticky (fixed
), then when you click on the menu in the top left, it's obvious that the header's position automatically changes to relative
.
HTML
<header role="banner" class="secondary">
<a href="#menu" class="menu-toggle"><em>Menu</em> <span aria-hidden="true"></span></a>
<nav id="nav" role="navigation">
<ul class="menu set">
<li class="subnav">
<a href="#">Link</a>
<ul class="sub-menu">
<li><a href="#">Link</a></li>
<li><a href="#">Link</a></li>
<li><a href="#">Link</a></li>
</ul>
</li>
</ul>
</nav>
</header>
CSS
header[role="banner"] {
width: 100%;
background: #fff;
display: block;
margin: 0 auto;
padding: 0;
box-shadow: 0 2px 4px rgba(0,0,0,0.25);
z-index: 10000;
}
@media all and (min-width: 500px) {
header[role="banner"] {
position: fixed;
top: 0;
left: 0;
clear: both;
height: auto;
display: block;
}
}
@media all and (max-width: 499px) {
header[role="banner"] {
position: fixed;
}
}
JavaScript
$(document).ready(function() {
$('body').addClass('js');
var $menu = $('#nav'),
$menulink = $('.menu-toggle'),
$menuTrigger = $('.subnav > a');
$menulink.click(function(e) {
e.preventDefault();
$menulink.toggleClass('active');
$menu.toggleClass('active');
});
var add_toggle_links = function() {
if ($('.menu-toggle').is(":visible")){
if ($(".toggle-link").length > 0){
}
else{
$('.subnav > a').before('<span class="toggle-link">Open</span>');
$('.toggle-link').click(function(e) {
var $this = $(this);
$this.toggleClass('active').siblings('ul').toggleClass('active');
});
}
}
else{
$('.toggle-link').empty();
}
}
add_toggle_links();
$(window).bind("resize", add_toggle_links);
});