element 可编辑表格方向键操控

      <el-table-column v-bind:label="'标题'" prop="valuesScore" sortable>
        <template slot-scope="scope">
          <el-input v-model="scope.row.valuesScore"
                    v-bind:ref="'r'+ scope.$index + 'c' + 1"
                    @input='input(scope.row, scope.row.valuesScore, range.value)'
                    @keyup.native="keyup($event, scope.$index, 1)"
                    @change='save(scope.row)'></el-input>
        </template>
      </el-table-column>

      // region [键盘操作]

      keyup(ev, row, col) {
        this.keyupTo(ev, row, col, this.tabledatas.length, 6)
      },
      keyupTo(ev, row, col, rowCount, colCount) {
        // 替代 switch 的优雅写法
        const actions = {
          'ArrowUp': () => {
            row--
            if (row < 0) row = rowCount - 1
          },
          'ArrowDown': () => {
            row++
            if (row >= rowCount) row = 0;
          },
          'ArrowLeft': () => {
            col--
            if (col < 1) col = colCount;
          },
          'ArrowRight': () => {
            col++
            if (col > colCount) col = 1
          },
          'Enter': () => {
            col++
            if (col > colCount) {
              // 右下角的话保持不动
              if (row === (rowCount - 1)) {
                col = colCount
              } else {
                col = 1
                row++
              }
            }
          },
        }
        let action = actions[ev.key];
        if (action !== undefined) {
          action.call()
          // 用 nextTick 避免 input 还没渲染出来
          this.$nextTick(() => {
            this.$refs['r' + row + 'c' + col].focus()
          })
        }
      },

      // endregion 键盘操作