(function() {
// store the slider in a local variable
var $window = $(window),
flexslider = { vars:{} };
// tiny helper function to add breakpoints
function getGridSize() {
return (window.innerWidth < 600) ? 2 :
(window.innerWidth < 900) ? 3 : 4;
}
$(function() {
SyntaxHighlighter.all();
});
$window.load(function() {
$('.flexslider').flexslider({
animation: "slide",
animationLoop: false,
itemWidth: 210,
itemMargin: 5,
minItems: getGridSize(), // use function to pull in initial value
maxItems: getGridSize() // use function to pull in initial value
});
});
// check grid size on resize event
$window.resize(function() {
var gridSize = getGridSize();
flexslider.vars.minItems = gridSize;
flexslider.vars.maxItems = gridSize;
});
}());
<!-- Place somewhere in the <body> of your page -->
<div class="flexslider carousel">
<ul class="slides">
<li>
<img src="slide1.jpg" />
</li>
<li>
<img src="slide2.jpg" />
</li>
<li>
<img src="slide3.jpg" />
</li>
<li>
<img src="slide4.jpg" />
</li>
<!-- items mirrored twice, total of 12 -->
</ul>
</div>
