element-plus/docs/examples/table/fixed-header-with-fluid-header.vue

<template>
  <el-table :data="tableData" style="width: 100%" max-height="250">
    <el-table-column fixed prop="date" label="Date" width="150" />
    <el-table-column prop="name" label="Name" width="120" />
    <el-table-column prop="state" label="State" width="120" />
    <el-table-column prop="city" label="City" width="120" />
    <el-table-column prop="address" label="Address" width="600" />
    <el-table-column prop="zip" label="Zip" width="120" />
    <el-table-column fixed="right" label="Operations" width="120">
      <template #default="scope">
        <el-button
          type="text"
          size="small"
          @click.prevent="deleteRow(scope.$index)"
        >
          Remove
        </el-button>
      </template>
    </el-table-column>
  </el-table>
  <el-button class="mt-4" style="width: 100%" @click="onAddItem"
    >Add Item</el-button
  >
</template>

<script lang="ts" setup>
import { ref } from 'vue'

const now = new Date()

const tableData = ref([
  {
    date: '2016-05-01',
    name: 'Tom',
    state: 'California',
    city: 'Los Angeles',
    address: 'No. 189, Grove St, Los Angeles',
    zip: 'CA 90036',
  },
  {
    date: '2016-05-02',
    name: 'Tom',
    state: 'California',
    city: 'Los Angeles',
    address: 'No. 189, Grove St, Los Angeles',
    zip: 'CA 90036',
  },
  {
    date: '2016-05-03',
    name: 'Tom',
    state: 'California',
    city: 'Los Angeles',
    address: 'No. 189, Grove St, Los Angeles',
    zip: 'CA 90036',
  },
])

const deleteRow = (index: number) => {
  tableData.value.splice(index, 1)
}

const onAddItem = () => {
  now.setDate(now.getDate() + 1)
  tableData.value.push({
    date: formatDate(now, 'yyyy-MM-dd')!,
    name: 'Tom',
    state: 'California',
    city: 'Los Angeles',
    address: 'No. 189, Grove St, Los Angeles',
    zip: 'CA 90036',
  })
}

function formatDate(date: string | Date, fmt: string) {
  if (typeof date == 'string') {
    return date
  }

  if (!fmt) fmt = 'yyyy-MM-dd hh:mm:ss'

  if (!date || date == null) return null
  const o = {
    'M+': date.getMonth() + 1, // 月份
    'd+': date.getDate(), // 日
    'h+': date.getHours(), // 小时
    'm+': date.getMinutes(), // 分
    's+': date.getSeconds(), // 秒
    'q+': Math.floor((date.getMonth() + 3) / 3), // 季度
    S: date.getMilliseconds(), // 毫秒
  }
  if (/(y+)/.test(fmt))
    fmt = fmt.replace(
      RegExp.$1,
      `${date.getFullYear()}`.substr(4 - RegExp.$1.length)
    )
  for (const k in o) {
    if (new RegExp(`(${k})`).test(fmt))
      fmt = fmt.replace(
        RegExp.$1,
        RegExp.$1.length === 1 ? o[k] : `00${o[k]}`.substr(`${o[k]}`.length)
      )
  }
  return fmt
}
</script>