uni-app scroll-view 实现数据分页 触底页码+1

<scroll-view  class="bottomOut" scroll-y="true"  @scrolltolower="bottomOut" >
      <view v-for="(item.index) in itemList">此处省略遍历的内容</view>
      <view v-if="showTotal" class="showTotal">没有更多了呦~</view>
</scroll-view>

data(){
  total:"",
  showTotal：false,
  params:{
    page_index:1,
    page_size:15
  }
}

onShow() {
    this.request()
},
methods:{
  bottomOut() {
                if (this.params.page_index >= this.total) {
                    this.showTotal=true//已经滑到底的提醒
                    return false;
                }
                this.param.page_index ++;
                this.request()
            },
    request(){
        //封装的api请求 此处为方法
         _API_TeamList_GTeamLevelDetail(this.param).then(res => {
                         this.total = Math.ceil(res.data.total / this.param.page_size);
                         this.itemList= this.itemList.concat(res.data.list)
        }
}