按上面走的，为么页面提示报错呢？


listloading.min.js?6eb4:1 Uncaught TypeError: Cannot set property 'Listloading' of undefined
我是这样引入的
  import iscroll from "../../assets/js/iscroll.js"
  import $ from 'n-zepto'
  import listload from "../../assets/js/listloading.min.js"
