title: visible div in swiper
body: <p>Hi I am using <a href="http://www.idangero.us/sliders/swiper/demos.php" rel="nofollow noreferrer">Swiper</a>(Default) in my application. I want to know which div is currently visible. I tried <a href="https://stackoverflow.com/questions/12353741/how-to-check-if-a-div-is-visible-state-or-not">this</a> example but no use. I want to load data on <code>div</code> which is currently visible.</p>