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>