vue使用elementUI分页如何实现切换页面时返回页面顶部

<!-- 分页组件 -->
<el-pagination
 @current-change="handleCurrentChange"
 >
</el-pagination>

//跳到页顶
scrollTop(selector) {
  let element = selector && document.querySelector(selector) || window;
  element.scrollTo(0, 0);
},
handleCurrentChange(val) {
    ...
    this.scrollTop()
}

<el-pagination
  class="pull-right clearfix"
  @size-change="handleSizeChange"
  @current-change="handleCurrentChange"
  :current-page.sync="pageNo"
  :page-sizes="pageSizesList"
  :page-size="pageSize"
  layout="total, sizes, prev, pager, next, jumper"
  :total="totalDataNumber">
</el-pagination>

pageNo: 1,
pageSize: 10,
pageSizesList: [10, 15, 20, 30, 50],
tableData: [],//返回的结果集合
totalDataNumber: 0,//数据的总数,

this.$http({
  method: 'POST',
  url: '/api/Acs/QueryAccessLog',
  data: requestData
}).then(function (resp) {
  console.log(resp);
  if (resp.data.Data.Result.length > 0) {
    likeThis.tableData = resp.data.Data.Result;
    likeThis.totalDataNumber = resp.data.Data.Total;
    likeThis.listLoading=false;
  } else {
    likeThis.tableData = [];
    likeThis.totalDataNumber = 0;
  }
})

//改变每页显示数量
handleSizeChange(val){
  var likeThis=this;
  var pageSize = `${val}`;
  this.pageNo=1
  this.pageSize= parseInt(pageSize);
  console.log('pageSize: '+pageSize);
  this.$nextTick(() =>
    this.getAndDraw(1,pageSize,function (resp) {
      likeThis.totalDataNumber = resp.data.Data.Total;
    })
  )
},

     //改变页码
      handleCurrentChange(val){
        var pageSize=this.pageSize;
//        this.pageNo=pageNo;
        console.log('pageSize:'+this.pageSize)
        this.getAndDraw(parseInt(pageNo),parseInt(pageSize));
      },