VUE3的ElementPlus Table 表格实现可编辑单元格

 1.首先定位到需要编辑的列，替换el-table-column

<template>
<el-table
:data="tableData"
style="width: 100%"
ref=tableRef
border>
  <el-table-column type="index" label="序号" width="50" align="center" fixed="left"/>
  <el-table-column prop="id" label="主键" width="100" v-if="false"/>
  <el-table-column prop="date" label="时间" width="180"/>
  <el-table-column prop="name" label="名称" width="180"/>
  <el-table-column label="Editable Column" width="300">
  <template #default="{ row, column, $index }">
    <el-input
      size="small"
      v-if="
       tableRowEditId === row.id &&
       tableColumnEditIndex === column.id
      "
      v-model="row.taskId"
      @blur="blurUnitInput(row, column)"
      @keyup.enter="blurUnitInput(row, column)"
    />
    <span v-else class="hover-border">{{ row.taskId }}</span>
  </template>
  </el-table-column>
</el-table>
</template>

2.el-table 标签下面增加 cell-click 事件，当某个单元格被点击时会触发该事件

<template>
<el-table 
:data="tableData" 
style="width: 100%"
ref=tableRef
@cell-click="showUnitInput"
border>
  <el-table-column type="index" label="序号" width="50" align="center" fixed="left"/>
  <el-table-column prop="id" label="主键" width="100" v-if="false"/>
  <el-table-column prop="date" label="时间" width="180"/>
  <el-table-column prop="name" label="名称" width="180"/>
   <el-table-column label="Editable Column" width="300">
    <template #default="{ row, column, $index }">
      <el-input
        size="small"
        v-if="
         tableRowEditId === row.id &&
         tableColumnEditIndex === column.id
        "
        v-model="row.taskId"
        @blur="blurUnitInput(row, column)"
        @keyup.enter="blurUnitInput(row, column)"
      />
      <span v-else class="hover-border">{{ row.taskId }}</span>
    </template>
  </el-table-column>
</el-table>
</template>

3. 增加标识变量、事件方法，可以在 blurUnitInput 方法里面实现修改的接口

<script lang="ts" setup name="tableindex">
const tableRowEditId = ref()
const tableColumnEditIndex = ref()
const showUnitInput = (row: any, column: any) => {
  // console.log('row', row)
  // console.log('column', column)
  //赋值给定义的变量
  tableRowEditId.value = row.id //确定点击的单元格在哪行 如果数据中有ID可以用ID判断，没有可以使用其他值判断，只要能确定是哪一行即可
  tableColumnEditIndex.value = column.id //确定点击的单元格在哪列
}
const blurUnitInput = (row: { [x: string]: boolean }, column: any) => {
  tableRowEditId.value = null
  tableColumnEditIndex.value = null
  //在此处调接口传数据
  console.log(row)
  console.log(column)
}
</script>

4.增加一个样式，使可编辑的单元格鼠标悬停时显示虚线边框

<style lang="scss" scoped>
.hover-border {
  border: none; /* 默认无边框 */
 
}
.hover-border:hover {
  border: 1px dotted #165DFF; /* 鼠标悬停时显示虚线边框 */
  padding: 2px;
}
</style>