1.banner正反轮流交替
<style type="text/css">
width: 100%;
height: 500px;
transition: all 0.5s;
}
</style>
<script type="text/javascript">
window.onload = function(){var n = 0;
var banner=document.getElementsByClassName("banner")[0]
var abc=["01.jpg","02.jpg"];
setInterval(function(){n++;
var deg = 180*(n%2);
banner.style.transform="rotateX("+deg+"deg)";
setTimeout(function(){banner.style.backgroundImage="url("+abc[deg/180]+")";},300)
},3000);
}
</script>
<body>
<div class="banner"></div>
</body>