1、

mounted() {
  var swiper = new Swiper('.swiper-container', {
    pagination: '.swiper-pagination',
    paginationClickable: true,
    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
  });
}

2、

mounted() {
  window.onload = function() {
    this.myswiper = new Swiper(".swiper-container", {
      slidesPerView: "auto",
      centeredSlides: true,
      loop: true,
      spaceBetween: 4,
      navigation: {
        nextEl: ".swiper-button-next",
        prevEl: ".swiper-button-prev",
      },
    });
  };
}

3、

// 如果是axios就放在axios的.then内
axios({
//....
}).then(res => {
 this.$nextTick(function () {
     this.swiperInit()
  })
})