el-table的 :cell-style用法
实现表格固定行文字高亮效果

  <el-table
        ref="table"
        border
        stripe
        :data="list"
        :height="height"
        highlight-current-row
        :cell-style="cellStyle"
      >
       <el-table-column
          prop="code"
          label="规则编码"
          :min-width="120"
          show-overflow-tooltip
        >
          <template slot-scope="{ row }">
            <el-popover
              v-show="row.error"
              placement="top"
              trigger="hover"
              content="规则异常"
            >
              <i slot="reference" class="remark-icon el-icon-warning-outline" />
            </el-popover>
            {{ row.code}}
          </template>
        </el-table-column>
  </el-table>

    cellStyle({ rowIndex }) {
      const rowsToHighlight = []
      this.list.forEach((item, index) => {
        if (item.error) {
          rowsToHighlight.push(index)
        }
      })
      if (rowsToHighlight.includes(rowIndex)) {
        return 'color: #F59A23;'
      }
      return ''
    },