添加：
observeParents: true, //修改swiper的父元素时，自动初始化swiper
observer: true //修改swiper自己或子元素时，自动初始化swiper

  var mySwiper1 = new Swiper(".mySwiper", {
    navigation: {
      nextEl: ".swiper-button-next",
      prevEl: ".swiper-button-prev",
    },
    pagination: {
      el: ".swiper-pagination",
      clickable: true,
    },
    observeParents: true, //修改swiper的父元素时，自动初始化swiper
    observer: true   //修改swiper自己或子元素时，自动初始化swiper
  });