jQuery addClass example
Change class name on click in jQuery
HTML
<div class="box1">
Lorem ipsum dolor sit amet, consectetur adipisicing elit. Tenetur, itaque.
</div>
CSS
.box1{
background-color: #ccc;
width: 200px;
min-height: 599px;
padding: 20px;
}
.box2{
background-color: red;
}
JavaScript
if($('.box1').innerHeight() > 600){
$('.box1').addClass('box2');
}