jQuery ReSmenu is a very simple and lightweight (~1Kb) jQuery plugin that collapse ul menus into selects on responsive layouts.
To use it you just have to include jQuery and a copy of the plugin in your head or footer:
<script type="text/javascript" src="https://www.jq22.com/jquery/jquery-1.10.2.js"></script> <script type="text/javascript" src="jquery.resmenu.min.js"></script>
Let's say this is your menu:
<div class="menu_container">
<ul class="toresponsive">
<li><a href="/">Home</a></li>
<li class="current-menu-item"><a href="test.htm">Link</a></li>
<li><a href="test.htm">Link 2</a></li>
<li><a href="test.htm">Link 3</a></li>
<li><a href="test.htm">Link 4</a></li>
</ul>
</div>
Now the only thing to do is to trigger the menu with:
$(window).ready(function () {
$('.toresponsive').ReSmenu();
});
If you need more control here's the plugin settings:
$('.toresponsive').ReSmenu({
menuClass: 'responsive_menu', // Responsive menu class
selectId: 'resmenu', // select ID
textBefore: false, // Text to add before the mobile menu
selectOption: false, // First select option
activeClass: 'current-menu-item', // Active menu li class
maxWidth: 480 // Size to which the menu is responsive
});
$('#menu1').ReSmenu();
Example B - Collapse at 720px wide
$('#menu2').ReSmenu({
maxWidth: 720
});
Example C - Menu with label
$('#menu3').ReSmenu({
textBefore: 'Choose:'
});
Example D - Menu with first option
The active li won't be highlighted
$('#menu4').ReSmenu({
selectOption: 'Choose:'
});
ReSmenu runs out of the box but if you want to style your select to better fit the container you can take advantage of the short css style taken from twitter bootstrap:
.responsive_menu select {
display: block;
width: 100%;
height: 36px;
padding: 6px 12px;
font-size: 14px;
line-height: 1.42857;
color: rgb(85, 85, 85);
vertical-align: middle;
background-color: rgb(255, 255, 255);
background-image: none;
border: none;
}