vue+elementPlus实现表格展示序号并且翻页不重新排

<template>
  <el-table :data="tableData" style="width: 100%">
    <el-table-column type="index" :index="indexMethod" />
    <el-table-column prop="date" label="Date" width="180" />
    <el-table-column prop="name" label="Name" width="180" />
    <el-table-column prop="address" label="Address" />
  </el-table>
  <el-pagination
   v-model:page-size="params.pageSize"
   background
   layout="prev, pager, next"
   size="small"
   :total="4"
    @current-change="handleCurrentChange"
   />
</template>

<script lang="ts" setup>
import {ref} from 'vue';
// index+1 代表从1开始排序
const indexMethod = (index: number) => {
  return (params.pageNo - 1) * params.pageSize + (index + 1)
}
const params = {
    pageNo: 1,
    pageSize: 3
}
let tableData = ref([
  {
    date: '2015-05-03',
    name: 'Tom',
    state: 'California',
    city: 'Los Angeles',
    address: 'No. 189, Grove St, Los Angeles',
    zip: 'CA 90036',
    tag: 'Home',
  },
  {
    date: '2016-05-02',
    name: 'Tom',
    state: 'California',
    city: 'Los Angeles',
    address: 'No. 189, Grove St, Los Angeles',
    zip: 'CA 90036',
    tag: 'Office',
  },
  {
    date: '2017-05-04',
    name: 'Tom',
    state: 'California',
    city: 'Los Angeles',
    address: 'No. 189, Grove St, Los Angeles',
    zip: 'CA 90036',
    tag: 'Home',
  }
])
const handleCurrentChange = (val) =>{
  params.pageNo = val;
  tableData.value = [
   {
    date: '2018-05-01',
    name: 'Tom',
    state: 'California',
    city: 'Los Angeles',
    address: 'No. 189, Grove St, Los Angeles',
    zip: 'CA 90036',
    tag: 'Office',
  }, {
    date: '2019-05-03',
    name: 'Tom',
    state: 'California',
    city: 'Los Angeles',
    address: 'No. 189, Grove St, Los Angeles',
    zip: 'CA 90036',
    tag: 'Home',
  },
  {
    date: '2020-05-02',
    name: 'Tom',
    state: 'California',
    city: 'Los Angeles',
    address: 'No. 189, Grove St, Los Angeles',
    zip: 'CA 90036',
    tag: 'Office',
  }
  ]
}
</script>

排序翻页不重新从1开始

<el-table-column type="index" :index="indexMethod" />

// index+1 代表从1开始排序

const indexMethod = (index: number) => {

return (params.pageNo - 1) * params.pageSize + (index + 1)

}