一、每次获取的数据都是从后台全部获取到，在前台改变 Table data实现

例子：

<template>
  <div>
    <el-table
      :data="
        tableData.slice((currentPage - 1) * pageSize, currentPage * pageSize)
      "
      style="width: 100%"
    >
      <el-table-column prop="date" label="日期" width="180"> </el-table-column>
      <el-table-column prop="name" label="姓名" width="180"> </el-table-column>
      <el-table-column prop="address" label="地址"> </el-table-column>
    </el-table>

    <!--分页-->

    <div class="block">
      <span class="demonstration">完整功能</span>
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="currentPage4"
        :page-sizes="[1, 2, 3, 4]"
        :page-size="100"
        layout="total, sizes, prev, pager, next, jumper"
        :total="4"
      >
      </el-pagination>
    </div>
  </div>
</template>
<script>
export default {
  data() {
    return {
      pageSize: 2,
      currentPage: 1,
      currentPage4: 2,
      tableData: [
        {
          date: '2016-05-02',
          name: '王小虎1',
          address: '上海市普陀区金沙江路 1518 弄',
        },
        {
          date: '2016-05-04',
          name: '王小虎2',
          address: '上海市普陀区金沙江路 1517 弄',
        },
        {
          date: '2016-05-01',
          name: '王小虎3',
          address: '上海市普陀区金沙江路 1519 弄',
        },
        {
          date: '2016-05-03',
          name: '王小虎4',
          address: '上海市普陀区金沙江路 1516 弄',
        },
      ],
    }
  },
  methods: {
    handleSizeChange(val) {
      this.$data.pageSize = val
      console.log(`每页 ${val} 条`)
    },
    handleCurrentChange(val) {
      console.log(`当前页: ${val}`)

      this.$data.currentPage = val
    },
  },
}
</script>
<style scoped>
</style>

二、通过后台接口、每次分页变化时候调用后台接口（这个接口传递 第几页page、每页显示多少条数据row）;此时前台data 不同变化；只需要每次选择第几页、每页多少条数据时向后台传递参数调用接口。