1. 使用async/await可以更好地控制事件循环，像处理DOM事件或定时器等场合。
eg1
标签：promises,originPapelUrls,const,imgUrlList,await,js,async From： https://www.cnblogs.com/imsomnus/p/18396140
eg1
标签：promises,originPapelUrls,const,imgUrlList,await,js,async From： https://www.cnblogs.com/imsomnus/p/18396140