$(function(){
  var his = $(".zhuan .hotbuilding");
  if(his.length > 0){
  var gallerySwiper = new Swiper('.zhuan .hotbuilding',{
       autoplay: {
            delay:4500,
            pauseOnMouseEnter:true,
         disableOnInteraction: false
          },
      slidesPerView: 3,
        paginationClickable: true,
        spaceBetween: 30,
        loop: true,
      loopedSlides: 5,
                pagination:{
          el: '.zhuan_box .zhuan_paginations',
        //  type: 'fraction',
        },
      navigation: {
        nextEl: '.zhuan_box.swiper-next',
        prevEl: '.zhuan_box.swiper-prev',
      },
   breakpoints: {
                
        0: {
                    slidesPerView: 1,
                    spaceBetween: 30
                },
                768: {
                    slidesPerView: 2,
                    spaceBetween: 30
                },
              
                1024: {
                    slidesPerView: 3,
                    spaceBetween: 30
                },
        1400: {
                    slidesPerView: 4,
                    spaceBetween: 30
                }
   }
 
})
  }
 })