$require(['swiper'], function () {
    var swiper = new Swiper('.magnify', {
      
      autoplay: {
            delay: 3000, // 2.5秒切换一次
        },
      
        observer:true,  //修改swiper自己或子元素时，自动初始化swiper
        observeParents:true,  //修改swiper的父元素时，自动初始化swiper
        slidesPerView: 3,
        spaceBetween: 20,
        centeredSlides: true,
        loop: true,
        navigation: {
            nextEl: '.Under',
            prevEl: '.Upper',
        },
    });
})