vue拖拽添加的简单实现

 <MyShuttle :dataOrigin='[
          {
            Name:"数据001",
            Id:"数001",
          },
          {
            Name:"数据002",
            Id:"数001",
          },
          {
            Name:"数据003",
            Id:"数001",
          }]' 
          
      :space='[{
            Name:"右001",
            Id:"右001",
            }]' />

@dragenter.prevent @dragover.prevent
// 阻止浏览器默认行为，不然会显示一个叉叉，不好看

@dragleave.stop=“dragleave($event, ‘main')”

@dragend.stop=“dragEnd($event, item)”

<template>
  <div class="MyShuttle">
    <div class="MyShuttleLeft">
      <div class="title">数据源</div>
      <div class="dataBox" @dragleave.stop="dragleave($event, 'main')">
        <div v-for="(item, i) in dataOrigin" :key="i" class="dataList" draggable @dragenter.prevent
          @dragover.prevent @dragstart.stop="dragstart($event, item)"
          @dragend.stop="dragEnd($event, item)">
          {{ item.Name}}
        </div>
      </div>
    </div>
    <div class="MyShuttleCenter"></div>
    <div class="MyShuttleRight">
      <div class="title">数据源</div>
      <div ref="MyShuttleRight" class="dataBox">
        <div v-for="(item, i) in spaceList" :key="i" class="dataList" draggable @dragenter.prevent
          @dragover.prevent>
          {{ item.Name}}
        </div>
      </div>
    </div>
  </div>
</template>

<script>
export default {
  name: '',
  components: {},
  props: {
    dataOrigin: {
      type: Array
    },
    space: {
      type: Array
    }
  },
  data() {
    return {
      spaceList: this.space,
      isDragStatus: false
    }
  },
  computed: {},
  watch: {},
  created() { },
  mounted() { },
  methods: {
    dragleave(e, item) {
      // console.log(e, item)
      if (item === 'main') {
        this.isDragStatus = true
      } else {
        this.isDragStatus = false
      }
      // console.log(this.isDragStatus)
    },
    dragstart(e, item) {
      // console.log(e, item)
    },
    dragEnd(e, item) {
      const top = this.$refs.MyShuttleRight.getBoundingClientRect().top
      const right = this.$refs.MyShuttleRight.getBoundingClientRect().right
      const bottom = this.$refs.MyShuttleRight.getBoundingClientRect().bottom
      const left = this.$refs.MyShuttleRight.getBoundingClientRect().left
      console.log(top, right, bottom, left)
      console.log(e.clientX, e.clientY, item)
      if (this.isDragStatus && e.clientY > top && e.clientY < bottom && e.clientX > left && e.clientX < right) {
        this.spaceList.push(item)
        console.log(this.spaceList.indexOf(item))
      }
    }
  }
}
</script>

<style scoped lang="scss">
.MyShuttle {
  width: 100%;
  height: 308px;

  display: flex;
  justify-content: space-between;
  // 左右盒子公共样式
  .MyShuttleLeft,
  .MyShuttleRight {
    border: 1px solid #dddddd;
    border-collapse: collapse;
    .title {
      box-sizing: border-box;
      width: 100%;
      height: 40px;
      background: #f5f5f5;
      border-radius: 4px 4px 0px 0px;
      border-bottom: 1px solid #dddddd;
      padding: 10px 16px;
      font-size: 14px;
      font-family: PingFangSC-Regular, PingFang SC;
      font-weight: 400;
      color: #333333;
      line-height: 20px;
    }
    .dataBox {
      width: 100%;
      height: 228px;
      overflow: auto;
      padding: 6px 0;
      .dataList {
        width: 96%;
        height: 40px;
        box-sizing: border-box;
        font-size: 14px;
        font-family: PingFangSC-Regular, PingFang SC;
        font-weight: 400;
        color: #666;
        line-height: 20px;
        margin: 0 2% 10px;
        padding: 10px 16px;
        border: 1px solid #ddd;
        border-radius: 4px;
        user-select: none;
        cursor: pointer;
        &:hover {
          color: #01bc77;
          background: rgba(1, 188, 119, 0.1);
        }
      }
    }
  }
  .MyShuttleLeft {
    width: 362px;
    height: 100%;
    background: #ffffff;
    border-radius: 4px;
  }
  .MyShuttleCenter {
    width: 64px;
    height: 100%;
  }
  .MyShuttleRight {
    width: 362px;
    height: 100%;
    background: #ffffff;
    border-radius: 4px;
  }
}
</style>