用scroll-view做查询瀑布流时，通过console.log日志跟踪，发现当滚动速度很快时，bindscrolltolower事件有概率不会触发，此时瀑布流查询被中断。

<scroll-view class="search-scroll" wx:else scroll-top="{{page.topNum}}" scroll-y style="height:{{page.scrollHeight}}"  scroll-with-animation="{{true}}" scroll-anchoring="{{true}}"   refresher-enabled="{{true}}" refresher-threshold="{{80}}" refresher-triggered="{{page.refreshing}}"   bindrefresherrefresh="onRefresh" bindscrolltolower="scrollLoad">

  scrollLoad(){

    console.log('滚动至底部后查询 page='+this.data.page.pageNo)

    this.loadResult();

  },