这是一款基于Swiper实现的全屏自适应焦点图轮播代码，点击箭头按钮或拖动图片左右滚动切换到中间展示大图。

JS代码

<script type="text/javascript" src="js/swiper.min.js"></script>
<script type="text/javascript">
window.onload = function() {
var swiper = new Swiper('.swiper-container',{
autoplay: false,
speed: 1000,
autoplayDisableOnInteraction: false,
loop: true,
centeredSlides: true,
slidesPerView: 2,
pagination: '.swiper-pagination',
paginationClickable: true,
prevButton: '.swiper-button-prev',
nextButton: '.swiper-button-next',
onInit: function(swiper) {
swiper.slides[2].className = "swiper-slide swiper-slide-active";
},
breakpoints: {
668: {
slidesPerView: 1,
}
}
});
}
</script>