1、表格显示数据

<el-table
      :data="tableData"
      style="width: 100%">
      <el-table-column
        prop="battery_min"
        label="最小值"
        width="180"/>
      <el-table-column
        prop="battery_max"
        label="最大值"
        width="180"/>
      <el-table-column label="操作">
        <template slot-scope="scope">
          <el-button
            type="primary"
            size="mini"
            @click="handleEdit(scope.$index, scope.row);dialogFormVisible =true">编辑</el-button>
        </template>
      </el-table-column>
    </el-table>

2、对应编辑按钮打开Dialog对话框

  <el-dialog :visible.sync="dialogFormVisible" title="阈值详情">
      <el-form :model="form">
        <el-form-item :label-width="formLabelWidth" label="阈值最小值">
          <el-input v-model="form.battery_min" auto-complete="off"/>
        </el-form-item>
        <el-form-item :label-width="formLabelWidth" label="阈值最大值">
          <el-input v-model="form.battery_max" auto-complete="off"/>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogFormVisible = false">取 消</el-button>
        <el-button type="primary" @click="dialogFormVisible = false;updateBattery(form.battery_min,form.battery_max)">确 定</el-button>
      </div>
    </el-dialog>

3、对应数据，点击编辑获取对应的数据，修改时进行接口调用即可

export default {
  data() {
    return {
      tableData: [],
      dialogFormVisible: false,
      formLabelWidth: '120px',
      form: {}
    }
  },
  created() {
  },
  methods: {
    handleEdit(index, row) {
      console.log(index, row)
      //row是该行tableData对应的一行
      this.form = row
    }
  }
}

效果：

参考：https://element.eleme.cn/2.0/#/zh-CN/component/dialog