slide count tests jQuery cycle 2

HTML

<script src="http://malsup.github.com/min/jquery.cycle2.min.js"></script>
<div class="cycle-slideshow" 
    data-cycle-timeout="0" 
    data-cycle-next=".cycle-next" 
    >
    <img src="http://placehold.it/250x250" />
    <!--<img src="http://placehold.it/350x250" />-->
    <!--<img src="http://placehold.it/450x250" />-->
</div>
<div class="cycle-next">Next</div>

JavaScript

var slides = $('.cycle-slideshow').children().length;
if(slides <= 1) {
    $('.cycle-next').css("display", "none");
} else {
    $('.cycle-next').css("display", "visible");
}