左滑刪除（vue）

代碼：

<template>
  <div class="container">
    <div class="page-title">滑動組件</div>
    <ul>
      <li class="list-item " v-for="(item,index) in list " data-type="0">
        <div class="list-box" @touchstart.capture="touchStart"
          @touchend.capture="touchEnd" @click="skip">
          <img class="list-img" :src="item.imgUrl" alt="">
          <div class="list-content">
            <p class="title">{{item.title}}</p>
            <p class="tips">{{item.tips}}</p>
            <p class="time">{{item.time}}</p>
          </div>
        </div>
        <div class="delete" @click="deleteItem" :data-index="index">刪除</div>
      </li>
    </ul>
  </div>
</template>

<script>
export default {
  name: "slideDelete",
  data() {
    return {
      list: [
        {
          title: "ÀÀÀÀÀÀÀÀÀÀÀÀÀÀÀ",
          imgUrl:
            "https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1520684740844&di=b4738abef4d4d9314e20df9d7632ae31&imgtype=0&src=http%3A%2F%2Fimgsrc.baidu.com%2Fimgad%2Fpic%2Fitem%2F8b82b9014a90f6037cb445933312b31bb151edda.jpg",
          tips: "BBBBBBBBBBB",
          time: "01:00"
        },
        {
          title: "ÀÀÀÀÀÀÀÀÀÀÀÀÀÀÀ",
          imgUrl:
            "https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1520684740844&di=b4738abef4d4d9314e20df9d7632ae31&imgtype=0&src=http%3A%2F%2Fimgsrc.baidu.com%2Fimgad%2Fpic%2Fitem%2F8b82b9014a90f6037cb445933312b31bb151edda.jpg",
          tips: "BBBBBBBBBBB",

          time: "01:00"
        },
        {
          title: "ÀÀÀÀÀÀÀÀÀÀÀÀÀÀÀ",
          imgUrl:
            "https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1520684740844&di=b4738abef4d4d9314e20df9d7632ae31&imgtype=0&src=http%3A%2F%2Fimgsrc.baidu.com%2Fimgad%2Fpic%2Fitem%2F8b82b9014a90f6037cb445933312b31bb151edda.jpg",
          tips: "BBBBBBBBBBB",
          time: "01:00"
        },
        {
          title: "ÀÀÀÀÀÀÀÀÀÀÀÀÀÀÀ",
          imgUrl:
            "https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1520684740844&di=b4738abef4d4d9314e20df9d7632ae31&imgtype=0&src=http%3A%2F%2Fimgsrc.baidu.com%2Fimgad%2Fpic%2Fitem%2F8b82b9014a90f6037cb445933312b31bb151edda.jpg",
          tips: "BBBBBBBBBBB",
          time: "01:00"
        }
      ],
      startX: 0,
      endX: 0
    };
  },
  methods: {
    //跳轉
    skip() {
      if (this.checkSlide()) {
        this.restSlide();
      } else {
        alert("點擊了");
      }
    },
    //滑動開始
    touchStart(e) {
      // @touchstart.capture事件修飾符的作用添加事件偵聽器時使用事件捕獲模式
      // 即是給元素添加一個監聽器，當元素髮生冒泡時，先觸發帶有該修飾符的元素。若有多個該修飾符，則由外而內觸發。
      // 就是誰有該事件修飾符，就先觸發誰。

      // 記錄起始X的位置
      this.startX = e.touches[0].clientX;
      // console.info("touchStart", e);
    },
    //滑動結束
    touchEnd(e) {
      console.info("touchEnd", e);

      let parentElement = e.currentTarget.parentElement;
      // console.info("parentElement", parentElement);

      this.endX = e.changedTouches[0].clientX;
      if (parentElement.dataset.type == 0 && this.startX - this.endX > 30) {
        this.restSlide();
        parentElement.dataset.type = 1;
      }
      if (parentElement.dataset.type == 1 && this.startX - this.endX < -30) {
        this.restSlide();
        parentElement.dataset.type = 0;
      }
      this.startX = 0;
      this.endX = 0;
    },
    //判斷當前是否有滑塊處於滑動狀態
    checkSlide() {
      let listItems = document.querySelectorAll(".list-item");
      for (let i = 0; i < listItems.length; i++) {
        if (listItems[i].dataset.type == 1) {
          return true;
        }
      }
      return false;
    },
    //一次只能滑動一個
    restSlide() {
      let listItems = document.querySelectorAll(".list-item");
      for (let i = 0; i < listItems.length; i++) {
        listItems[i].dataset.type = 0;
      }
    },
    //刪除
    deleteItem(e) {
      let index = e.currentTarget.dataset.index;
      this.restSlide();
      this.list.splice(index, 1);
    }
  }
};
</script>

<style scoped lang="scss">
.page-title {
  text-align: center;
  font-size: 17px;
  padding: 10px 15px;
  position: relative;
}
.page-title:after {
  content: " ";
  position: absolute;
  left: 0;
  bottom: 0;
  right: 0;
  height: 1px;
  border-bottom: 1px solid #ccc;
  color: #ccc;
  -webkit-transform-origin: 0 100%;
  transform-origin: 0 100%;
  -webkit-transform: scaleY(0.5);
  transform: scaleY(0.5);
  z-index: 2;
}
.list-item {
  position: relative;
  height: 1.6rem;
  -webkit-transition: all 0.2s;
  transition: all 0.2s;
}
.list-item[data-type="0"] {
  transform: translate3d(0, 0, 0);
}
.list-item[data-type="1"] {
  transform: translate3d(-2rem, 0, 0);
}
.list-item:after {
  content: " ";
  position: absolute;
  left: 0.2rem;
  bottom: 0;
  right: 0;
  height: 1px;
  border-bottom: 1px solid #ccc;
  color: #ccc;
  -webkit-transform-origin: 0 100%;
  transform-origin: 0 100%;
  -webkit-transform: scaleY(0.5);
  transform: scaleY(0.5);
  z-index: 2;
}
.list-box {
  padding: 0.2rem;
  background: #fff;
  display: flex;
  align-items: center;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  justify-content: flex-end;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  font-size: 0;
}
.list-item .list-img {
  display: block;
  width: 1rem;
  height: 1rem;
}
.list-item .list-content {
  padding: 0.1rem 0 0.1rem 0.2rem;
  position: relative;
  flex: 1;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  overflow: hidden;
}
.list-item .title {
  display: block;
  color: #333;
  overflow: hidden;
  font-size: 15px;
  font-weight: bold;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.list-item .tips {
  display: block;
  overflow: hidden;
  font-size: 12px;
  color: #999;
  line-height: 20px;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.list-item .time {
  display: block;
  font-size: 12px;
  position: absolute;
  right: 0;
  top: 0.1rem;
  color: #666;
}
.list-item .delete {
  width: 2rem;
  height: 1.6rem;
  background: #ff4949;
  font-size: 17px;
  color: #fff;
  text-align: center;
  line-height: 1.6rem;
  position: absolute;
  top: 0;
  right: -2rem;
}
</style>