element-ui element-plus el-table 滚动懒加载

element-ui 未提供滚动条的事件，如果想通过滚动条做懒加载，只能自行去找到滚动区域，并监听滚动条事件。

使用dom查找并监听

element-ui 的滚动区域dom为 el-table__body-wrapper

element-plus 的滚动区域dom为 el-scrollbar__wrap

<template>
  <el-table :data="tableData" style="width: 100%" height="200" ref="table">
    <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>
</template>

<script>
const tableData = [
  {
    date: '2016-05-03',
    name: 'Tom',
    address: 'No. 189, Grove St, Los Angeles',
  },
  {
    date: '2016-05-02',
    name: 'Tom',
    address: 'No. 189, Grove St, Los Angeles',
  },
  {
    date: '2016-05-04',
    name: 'Tom',
    address: 'No. 189, Grove St, Los Angeles',
  },
  {
    date: '2016-05-01',
    name: 'Tom',
    address: 'No. 189, Grove St, Los Angeles',
  },
  {
    date: '2016-05-01',
    name: 'Tom',
    address: 'No. 189, Grove St, Los Angeles',
  },
  {
    date: '2016-05-01',
    name: 'Tom',
    address: 'No. 189, Grove St, Los Angeles',
  },
  {
    date: '2016-05-01',
    name: 'Tom',
    address: 'No. 189, Grove St, Los Angeles',
  },
  {
    date: '2016-05-01',
    name: 'Tom',
    address: 'No. 189, Grove St, Los Angeles',
  },
  {
    date: '2016-05-01',
    name: 'Tom',
    address: 'No. 189, Grove St, Los Angeles',
  },
  {
    date: '2016-05-01',
    name: 'Tom',
    address: 'No. 189, Grove St, Los Angeles',
  },
  {
    date: '2016-05-01',
    name: 'Tom',
    address: 'No. 189, Grove St, Los Angeles',
  },
  {
    date: '2016-05-01',
    name: 'Tom',
    address: 'No. 189, Grove St, Los Angeles',
  },
  {
    date: '2016-05-01',
    name: 'Tom',
    address: 'No. 189, Grove St, Los Angeles',
  },
  {
    date: '2016-05-01',
    name: 'Tom',
    address: 'No. 189, Grove St, Los Angeles',
  },
  {
    date: '2016-05-01',
    name: 'Tom',
    address: 'No. 189, Grove St, Los Angeles',
  },
]
export default {
  data() {
    return {
      tableData,
    }
  },
  mounted() {
    this.$nextTick(function () {
      var me = this
      this.$el
            .querySelector('.el-scrollbar__wrap')
            .addEventListener('scroll', function (this) {
          if (this.scrollHeight - this.scrollTop - this.offsetHeight < 50) {
            me.tableData.push({
              date: '2016-05-01',
              name: 'Tom',
              address: 'No. 189, Grove St, Los Angeles',
            },{
              date: '2016-05-01',
              name: 'Tom',
              address: 'No. 189, Grove St, Los Angeles',
            },{
              date: '2016-05-01',
              name: 'Tom',
              address: 'No. 189, Grove St, Los Angeles',
            },{
              date: '2016-05-01',
              name: 'Tom',
              address: 'No. 189, Grove St, Los Angeles',
            },{
              date: '2016-05-01',
              name: 'Tom',
              address: 'No. 189, Grove St, Los Angeles',
            })
          }
        })
    })
  },
}
</script>