swiper列数 slidesPerView属性决定

swiper轮播一行有几列如下决定

slidesPerView为3是三列，不写一列

// 初始化文章swiper
            var newsSwiper = new Swiper('#news-swiper', {
                slidesPerView: 3,
                spaceBetween: flag==2?10:20,
                navigation: {
                    nextEl: '.newsSwiper-next',
                    prevEl: '.newsSwiper-prev',
                },
                loop: true,
            })