vue3+ts中使用el-table-column中的#default="scope"时 报scope的类型错误 如何解决报错

data-index属性时需注意什么？

在vue3 ts中使用el-table-column中的data-index属性时，需要注意该属性所代表的是数据源中的字段名或索引值，而不是表格中的列名或序号。因此，在使用该属性时，需要保证数据源中的相应字段名或索引值存在且正确，否则将会导致表格渲染错误或数据显示异常。另外，需要注意的是，使用data-index属性可能会降低组件的可复用性和可读性，因此需要谨慎使用。

相关问题

vue3+ts中使用el-table-column中的#default="scope"时 报scope的类型错误

$scopedSlots插槽是如何实现自定义列渲染的？

在Vue3 TypeScript 中使用el-table-column的$scopedSlots插槽可以通过以下步骤实现自定义列渲染：

1. 在el-table-column中设置prop属性，指定数据源中对应列的数据。

2. 在el-table-column中使用$scopedSlots插槽，定义自定义渲染函数。

3. 在自定义渲染函数中使用props参数，获取对应列的数据，进行自定义渲染。

举个例子，如果要在一个表格中显示用户列表，其中包含用户名和头像两列，可以通过如下代码实现头像列的自定义渲染：

<template>
  <el-table :data="users" border>
    <el-table-column :prop="'username'" label="用户名"></el-table-column>
    <el-table-column :prop="'avatar'" label="头像">
      <template #default="{ row }">
        <img :src="row.avatar" alt="" width="30px" height="30px">
      </template>
    </el-table-column>
  </el-table>
</template>

<script lang="ts">
import { defineComponent } from 'vue';

export default defineComponent({
  data() {
    return {
      users: [
        {
          username: 'Tom',
          avatar: 'https://example.com/avatar1.png'
        },
        {
          username: 'Jerry',
          avatar: 'https://example.com/avatar2.png'
        },
        // more users
      ]
    }
  }
})
</script>

在上面的代码中，使用了默认插槽来定义头像列的自定义渲染函数，其中props参数代表当前行的数据对象，通过props.avatar获取对应列的数据，然后渲染为一张图片。

将以下vue+element ui代码转换成纯html+element ui代码：<template> <el-tabs v-model="activeName" class="demo-tabs" @tab-click="handleClick"> <el-tab-pane label="User" name="first"> <el-table :data="filterTableData" style="width: 100%"> <el-table-column label="Date" prop="date" /> <el-table-column label="Name" prop="name" /> <el-table-column align="right"> <template #header> <el-input v-model="search" size="small" placeholder="Type to search" /> </template> <template #default="scope"> <el-button size="small" @click="handleEdit(scope.$index, scope.row)" >Edit</el-button > <el-button size="small" type="danger" @click="handleDelete(scope.$index, scope.row)" >Delete</el-button > </template> </el-table-column> </el-table> </el-tab-pane> <el-tab-pane label="Config" name="second"> <el-table :data="filterTableData" style="width: 100%"> <el-table-column label="Date" prop="date" /> <el-table-column label="Name" prop="name" /> <el-table-column align="right"> <template #header> <el-input v-model="search" size="small" placeholder="Type to search" /> </template> <template #default="scope"> <el-button size="small" @click="handleEdit(scope.$index, scope.row)" >Edit</el-button > <el-button size="small" type="danger" @click="handleDelete(scope.$index, scope.row)" >Delete</el-button > </template> </el-table-column> </el-table></el-tab-pane> <el-tab-pane label="Role" name="third"> <el-table :data="filterTableData" style="width: 100%"> <el-table-column label="Date" prop="date" /> <el-table-column label="Name" prop="name" /> <el-table-column align="right"> <template #header> <el-input v-model="search" size="small" placeholder="Type to search" /> </template> <template #default="scope"> <el-button size="small" @click="handleEdit(scope.$index, scope.row)" >Edit</el-button > <el-button size="small" type="danger" @click="handleDelete(scope.$index, scope.row)" >Delete</el-button > </template> </el-table-column> </el-table></el-tab-pane> <el-tab-pane label="Task" name="fourth"> <el-table :data="filterTableData" style="width: 100%"> <el-table-column label="Date" prop="date" /> <el-table-column label="Name" prop="name" /> <el-table-column align="right"> <template #header> <el-input v-model="search" size="small" placeholder="Type to search" /> </template> <template #default="scope"> <el-button size="small" @click="handleEdit(scope.$index, scope.row)" >Edit</el-button > <el-button size="small" type="danger" @click="handleDelete(scope.$index, scope.row)" >Delete</el-button > </template> </el-table-column> </el-table></el-tab-pane> </el-tabs> </template> <script lang="ts" setup> import { computed, ref } from 'vue' interface User { date: string name: string address: string } const search = ref('') const filterTableData = computed(() => tableData.filter( (data) => !search.value || data.name.toLowerCase().includes(search.value.toLowerCase()) ) ) const handleEdit = (index: number, row: User) => { console.log(index, row) } const handleDelete = (index: number, row: User) => { console.log(index, row) } const tableData: User[] = [ { date: '2016-05-03', name: 'Tom', address: 'No. 189, Grove St, Los Angeles', }, { date: '2016-05-02', name: 'John', address: 'No. 189, Grove St, Los Angeles', }, { date: '2016-05-04', name: 'Morgan', address: 'No. 189, Grove St, Los Angeles', }, { date: '2016-05-01', name: 'Jessy', address: 'No. 189, Grove St, Los Angeles', }, ] </script> <style> .demo-tabs > .el-tabs__content { padding: 32px; color: #6b778c; font-size: 32px; font-weight: 600; } </style>

以下是转换后的纯HTML+Element UI代码：

<div class="demo-tabs el-tabs">
  <div class="el-tabs__header">
    <div class="el-tabs__nav-wrap">
      <div role="tab" aria-controls="pane-first" :aria-selected="activeName==='first' ? 'true' : 'false'" class="el-tabs__item" :class="{ 'is-active': activeName==='first' }" @click="activeName='first'">User</div>
      <div role="tab" aria-controls="pane-second" :aria-selected="activeName==='second' ? 'true' : 'false'" class="el-tabs__item" :class="{ 'is-active': activeName==='second' }" @click="activeName='second'">Config</div>
      <div role="tab" aria-controls="pane-third" :aria-selected="activeName==='third' ? 'true' : 'false'" class="el-tabs__item" :class="{ 'is-active': activeName==='third' }" @click="activeName='third'">Role</div>
      <div role="tab" aria-controls="pane-fourth" :aria-selected="activeName==='fourth' ? 'true' : 'false'" class="el-tabs__item" :class="{ 'is-active': activeName==='fourth' }" @click="activeName='fourth'">Task</div>
    </div>
  </div>
  <div class="el-tabs__content">
    <div role="tabpanel" aria-hidden="false" id="pane-first" class="el-tab-pane" :class="{ 'is-active': activeName==='first' }">
      <table class="el-table" style="width: 100%">
        <thead class="el-table__header">
          <tr>
            <th class="el-table_1_column_1">Date</th>
            <th class="el-table_1_column_2">Name</th>
            <th class="el-table_1_column_3">Operation</th>
          </tr>
        </thead>
        <tbody class="el-table__body">
          <tr v-for="(item, index) in filterTableData" :key="index">
            <td>{{ item.date }}</td>
            <td>{{ item.name }}</td>
            <td class="el-table_1_column_3">
              <button class="el-button el-button--small" @click="handleEdit(index, item)">Edit</button>
              <button class="el-button el-button--small el-button--danger" @click="handleDelete(index, item)">Delete</button>
            </td>
          </tr>
        </tbody>
      </table>
    </div>
    <div role="tabpanel" aria-hidden="true" id="pane-second" class="el-tab-pane" :class="{ 'is-active': activeName==='second' }">
      <table class="el-table" style="width: 100%">
        <thead class="el-table__header">
          <tr>
            <th class="el-table_2_column_1">Date</th>
            <th class="el-table_2_column_2">Name</th>
            <th class="el-table_2_column_3">Operation</th>
          </tr>
        </thead>
        <tbody class="el-table__body">
          <tr v-for="(item, index) in filterTableData" :key="index">
            <td>{{ item.date }}</td>
            <td>{{ item.name }}</td>
            <td class="el-table_2_column_3">
              <button class="el-button el-button--small" @click="handleEdit(index, item)">Edit</button>
              <button class="el-button el-button--small el-button--danger" @click="handleDelete(index, item)">Delete</button>
            </td>
          </tr>
        </tbody>
      </table>
    </div>
    <div role="tabpanel" aria-hidden="true" id="pane-third" class="el-tab-pane" :class="{ 'is-active': activeName==='third' }">
      <table class="el-table" style="width: 100%">
        <thead class="el-table__header">
          <tr>
            <th class="el-table_3_column_1">Date</th>
            <th class="el-table_3_column_2">Name</th>
            <th class="el-table_3_column_3">Operation</th>
          </tr>
        </thead>
        <tbody class="el-table__body">
          <tr v-for="(item, index) in filterTableData" :key="index">
            <td>{{ item.date }}</td>
            <td>{{ item.name }}</td>
            <td class="el-table_3_column_3">
              <button class="el-button el-button--small" @click="handleEdit(index, item)">Edit</button>
              <button class="el-button el-button--small el-button--danger" @click="handleDelete(index, item)">Delete</button>
            </td>
          </tr>
        </tbody>
      </table>
    </div>
    <div role="tabpanel" aria-hidden="true" id="pane-fourth" class="el-tab-pane" :class="{ 'is-active': activeName==='fourth' }">
      <table class="el-table" style="width: 100%">
        <thead class="el-table__header">
          <tr>
            <th class="el-table_4_column_1">Date</th>
            <th class="el-table_4_column_2">Name</th>
            <th class="el-table_4_column_3">Operation</th>
          </tr>
        </thead>
        <tbody class="el-table__body">
          <tr v-for="(item, index) in filterTableData" :key="index">
            <td>{{ item.date }}</td>
            <td>{{ item.name }}</td>
            <td class="el-table_4_column_3">
              <button class="el-button el-button--small" @click="handleEdit(index, item)">Edit</button>
              <button class="el-button el-button--small el-button--danger" @click="handleDelete(index, item)">Delete</button>
            </td>
          </tr>
        </tbody>
      </table>
    </div>
  </div>
</div>

需要注意的是，Element UI的CSS样式需要在HTML文件中引入。此外，上述代码中的`activeName`、`search`、`filterTableData`、`handleEdit`和`handleDelete`需要在JavaScript中定义和实现。