1. 插件

vue3-seamless-scroll
详解及使用

2.js

原文地址，请点我

<template>
  <div>
      <el-table ref="table1" :data="tableData" style="width: 100%; margin-bottom: 20px" height="200px">
          <el-table-column prop="date" label="Date" width="180"></el-table-column>
          <el-table-column prop="name" label="Name" width="180"></el-table-column>
      </el-table>
      <el-table ref="table2" :data="tableData" style="width: 100%" height="200px">
          <el-table-column prop="address" label="Address" width="180"></el-table-column>
          <el-table-column prop="tag" label="Tag" width="180"></el-table-column>
      </el-table>
  </div>
</template>
 
<script setup>
import { ref, onMounted } from 'vue'
import { ElTable } from 'element-plus'
const table1 = ref(null)
const table2 = ref(null)
let overElement = ""
onMounted(() => {
  const table1Wrapper = table1.value.$refs.bodyWrapper
  const table2Wrapper = table2.value.$refs.bodyWrapper
  console.log("table1Wrapper",table1Wrapper);
  table1Wrapper.addEventListener('mouseover', () => {
      overElement = "a"
      console.log("overElement1",overElement);
  })
  table2Wrapper.addEventListener('mouseover', () => {
      overElement = "b"
      console.log("overElement2",overElement);
  })
  table1Wrapper.addEventListener('scroll', () => {
      console.log("overElement3",overElement);
      if (overElement === "a") {
      console.log("overElement4",overElement);
          table2Wrapper.scrollTop = table1Wrapper.scrollTop
      }
  })
  table2Wrapper.addEventListener('scroll', () => {
      console.log("overElement5",overElement);
      if (overElement === "b") {
      console.log("overElement6",overElement);
          table1Wrapper.scrollTop = table2Wrapper.scrollTop
      }
  })
})
const tableData = [
  {
      date: '2016-05-03',
      name: 'Tom',
      address: 'No. 189, Grove St, Los Angeles',
      tag: 'Home',
  },
  {
      date: '2016-05-02',
      name: 'Tom',
      address: 'No. 189, Grove St, Los Angeles',
      tag: 'Office',
  },
  {
      date: '2016-05-04',
      name: 'Tom',
      address: 'No. 189, Grove St, Los Angeles',
      tag: 'Home',
  },
  {
      date: '2016-05-01',
      name: 'Tom',
      address: 'No. 189, Grove St, Los Angeles',
      tag: 'Office'
  }
]
</script>