<template>
  <div class="swiper-container">
    <div class="swiper-wrapper">
      <div class="swiper-slide" v-for="item in swiper"><img :src="item.room_src" alt=""></div>
      <!--<div class="swiper-slide" v-for="item in test"><img :src="item.room_src" alt=""></div>-->
    </div>
  </div>
</template>
<script>
 import Swiper from 'swiper'
 export default {
  name: 'swiper',
  data() {
   return {
    mySwiper: null,
//    test: [
//     "https://rpic.douyucdn.cn/acrpic/171024/288016_0921.jpg",
//     "https://rpic.douyucdn.cn/acrpic/171024/748396_0924.jpg",
//     "https://rpic.douyucdn.cn/acrpic/171024/453751_0922.jpg",
//     "https://rpic.douyucdn.cn/acrpic/171024/79663_0920.jpg"
//    ]
   }
  },
  props: ['swiper'], //swiper的就是test这个数据传递来的
  methods: {
   _initSwiper() {
    this.mySwiper = new Swiper('.swiper-container', {
     autoplay: 5000,//可选选项，自动滑动
    })
   },
   _updateSwiper() {
    this.$nextTick(() => {
     this.mySwiper.update(true); //swiper update的方法
    })
   },
   swiperUpdate() {
    if (this.mySwiper) { //节点存在
     this._updateSwiper(); //更新
    } else {
     this._initSwiper(); //创建
    }
   },
  },
  watch: {
   //通过props传来的数据 和 组件一加载节点就创建成功 二者不是同步，实时监听的swiper(传递的值)的变化
   swiper() {
    this.swiperUpdate();
   }
  },
  mounted() {
   this.swiperUpdate(); //页面一加载拉去数据创建节点
  }
 }
</script>
<style lang="scss" scoped>
  .swiper-container {
    width: 100%;
    height: 4rem;
    margin-top: 0.9rem;
    .swiper-wrapper {
      width: 100%;
      height: 100%;
      .swiper-slide {
        background-size: cover;
        width: 100%;
        height: 4rem;
        img {
          width: 100%;
          height: 100%;
        }
      }
    }
  }
</style>

//html
  <swiper :swiper="roomList.slice(6,10)" ></swiper>
//js
 import swiper from 'components/swiper/swiper'
 components: {
   swiper
  },