关于el-table

1.根据是否存在数据显示”暂无数据“字样

    <el-table
      :data="tableData1"
    >
      <template slot="empty">
        <div class="none_box">暂无数据</div>
      </template>
    </el-table>

/deep/.el-table__empty-text {
  width: 100% !important;
}

2.动态渲染el-table-column

<el-table>
     <template v-for="(item, index) in tableHeader">
        <el-table-column
          :prop="item.rulename"
          :label="item.labelName"
          align="center"
        ></el-table-column>
      </template>
</el-table>