vue+element実装テーブルを上下に移動

        ，               ，       ，        
        vue this.$set(target,obj,resourse)
 <el-table
          v-if="testShow"
          ref="interfaceTable"
          class="com-table"
          :height="tableHeight"
          v-loading="loading"
           element-loading-text="         ..."
      element-loading-spinner="el-icon-loading"
    element-loading-background="rgba(0, 0, 0, 0.8)"
          :data="structureList"
          border
          :highlight-current-row="true"
          :row-class-name="tableRowClassName"  //     
          @row-click="rowClickFunc"
        >
//          row
//      ，       index     
    tableRowClassName({
      row, rowIndex }) {
     
      var _this = this;
      row.index = rowIndex;
      if (_this.isTableActive) {
     
        return "active-row ";
      }
    },

//   
    handleUp() {
     
      var _this = this;
//tableIndex    0
      if (_this.tableIndex == 0) {
     
        _this.$message({
     
          message: "    ，      ",
          type: "warning"
        });
      } else {
     
       
        const len = _this.structureList[_this.tableIndex - 1];
        this.$set(
          _this.structureList,
          _this.tableIndex - 1,
          this.structureList[_this.tableIndex]
        );
        this.$set(_this.structureList, _this.tableIndex, len);
        console.log(this.structureList);
        this.$refs.interfaceTable.doLayout();

        _this.tableIndex -= 1;
      }
    },
 //   
    handleDown() {
     
      var _this = this;
      if (_this.tableIndex + 1 === _this.structureList.length) {
     
        _this.$message({
     
          message: "    ，      ",
          type: "warning"
        });
      } else {
     
      
        const len = this.structureList[_this.tableIndex + 1];
        this.$set(
          this.structureList,
          _this.tableIndex + 1,
          this.structureList[_this.tableIndex]
        );
        this.$set(this.structureList, _this.tableIndex, len);

       
        _this.tableIndex += 1;
      }
    },
        ，          ，