需要使用 addEventListener 的方法获取滑动条的位置
xxx.vue 页面是一直缓存的，所以使用路由进入钩子（onActivated）设置滑动条的位置
App.vue:
...<el-container><router-view v-slot="{ Component }"><keep-alive><component :is="Component" /></keep-alive></router-view>
...
xxx.vue
<script setup lang="ts">
import { ref, onMounted, onUnmounted, onActivated } from 'vue'const elm = ref(null)
let container_elm: any
let scroll_top: anyonActivated(() => {if (container_elm) {container_elm.scrollTop = scroll_top}
})onMounted(() => {container_elm = elm.value.$elif (container_elm) {container_elm.addEventListener('scroll', () => {console.log('scrollTop: ' + container_elm.scrollTop)scroll_top = container_elm.scrollTop});}
}
</script><template><el-container><el-aside width="200px">table</el-aside><el-main ref="elm"><div id="main" style="width:600px; height:400px;"></div><div id="main2" style="width:600px; height:400px;"></div></el-main></el-container>
</template>
