GitHub地址 https://github.com/sindresorhus/screenfull.js
例子 https://www.jianshu.com/p/cfbb13c32c9c
vue-fullscreen更适用于vue项目的全屏中
https://mirari.cc/2017/08/14/%E5%85%A8%E5%B1%8F%E5%88%87%E6%8D%A2%E7%BB%84%E4%BB%B6vue-fullscreen/