前端基于VUE ElementUI实现table行上移或下移(支持跨页移动)

最近在做后台管理遇见了一个这样的需求：table列表需要支持上下移动数据，并且也需要满足跨页移动，前端把数据移动整理之后，提交给后端进行保存（平常这种数据移动都是调用后端的接口，然后在查询数据就可以完成了，但是这次显然不能这么做，因为后端只有一个保存数据的接口，所以这就需要前端自己处理数据了，废话少说，上效果图和源码！

• 静态效果图

• 动态效果图
  
• 实现源码（HTML）

  <el-table :data="paginatedData">
    <el-table-column label="操作" prop="operate">
      <template slot-scope="scope">
        <el-button-group>
          <el-button
            title="下移"
            :disabled="isDown(scope.row)"
            @click="moveupOrmovedown(scope.row, scope.$index, 'down')"
          >
          </el-button>
          <el-button
            title="上移"
            :disabled="scope.$index === 0 && currentPage === 1"
            @click="moveupOrmovedown(scope.row, scope.$index, 'up')"
          >
          </el-button>
        </el-button-group>
      </template>
    </el-table-column>
  </el-table>
  <!-- 页码参考（此处不涉及该功能的任何逻辑，可忽略 -->
  <el-pagination
     background
     :page-size="pageSize"
     :current-page="currentPage"
     layout="total, prev, pager, next, jumper"
     :total="totalSize"
     @current-change="(val) => (currentPage = val)"
   >
 </el-pagination>

• 实现源码（JS）

   moveupOrmovedown(row, index, type) {
     let arr = this.filteredData
     const findIndex = this.filteredData.findIndex(
       (item) => item.date === row.date
     )
     index = findIndex > this.pageSize - 1 ? findIndex : index
     type === 'up'
       ? arr.splice(index - 1, 1, ...arr.splice(index, 1, arr[index - 1]))
       : arr.splice(index, 1, ...arr.splice(index + 1, 1, arr[index]))
   }

• 详情源码(仅展示参数)

<script>
export default {
  data() {
    return {
      totalSize: 0,
      currentPage: 1,
      pageSize: 10,
      filteredData: [],
      paginatedData: [],
      tableData: []
    }
  },
  methods: {
    isDown(row) {
      const findIndex = this.filteredData.findIndex(
        (item) => item.date === row.date
      )
      return findIndex === this.filteredData.length - 1 
    },
    moveupOrmovedown(row, index, type) {
      let arr = this.filteredData
      const findIndex = this.filteredData.findIndex(
        (item) => item.date === row.date
      )
      index = findIndex > this.pageSize - 1 ? findIndex : index
      type === 'up'
        ? arr.splice(index - 1, 1, ...arr.splice(index, 1, arr[index - 1]))
        : arr.splice(index, 1, ...arr.splice(index + 1, 1, arr[index]))
    },
    handleCurrentChange(val) {
      this.currentPage = val
    },
    selectCheckBox(selectCheckBox) {
      const newFilterData = this.filterDataByDate(
        this.tableData,
        selectCheckBox
      )
      this.filteredData = [...this.filteredData, ...newFilterData]
    },
    paginateData(data, pageSize, currentPage) {
      if (data.length < 11) return data
      const startIndex = (currentPage - 1) * pageSize
      const endIndex = startIndex + pageSize
      const dataToShow = data.slice(startIndex, endIndex)
      return dataToShow
    },
    updatePaginatedData() {
      this.totalSize = this.filteredData.length
      // 分页(前端处理)
     // this.paginatedData = this.$util.paginateData(
      this.paginatedData = this.paginateData(
        this.filteredData,
        this.pageSize,
        this.currentPage
      )
    }
  },
  created() {
    // 调后端接口返回的全部数据(后面前端自己分页)
    this.tableData = tableData
  },
  mounted() {},
  watch: {
    currentPage: {
      handler(newPage) {
        this.updatePaginatedData()
      },
      immediate: true,
    },
    filteredData: {
      handler(newArray) {
        this.updatePaginatedData()
      },
      immediate: true,
    }
  },
  computed: {},
  filters: {}
}
</script>