滚动加载解决el-table是数据量大加载缓慢的问题

window.addEventListener('resize', () => {
      this.bindingScrollEvent()
      this.getTableHeight()
    })
...
...
// 回到列表顶部
    backTop () {
      this.$refs.taskTable.bodyWrapper.scrollTop = 0
    },
// 监听滚动事件（）
    bindingScrollEvent () {
      let tableBodyEle = this.$refs.taskTable.bodyWrapper
      tableBodyEle.addEventListener('scroll', () => {
        if (tableBodyEle.scrollHeight - tableBodyEle.scrollTop - tableBodyEle.clientHeight < 10 && this.currentPage <= this.pageCount) {
          tableBodyEle.scrollTop = tableBodyEle.scrollTop > 20 ? tableBodyEle.scrollTop - 20 : 0
          this.$emit('loadMore', {
            page: this.currentPage,
            key: this.keyword,
            projectNames: this.projectFilter.data,
            statusList: this.stateFilter.data,
            taskNames: this.jobNameFilter.data
          })
          console.log('loadMore, current page: ' + this.currentPage)
          this.currentPage++
        }
      })
    },