es5 es6 es6+ 2018-01-31 本文已影响0人 古_道_西_风_瘦_马 http://huangxuan.me/2015/09/22/js-version/ https://zhuanlan.zhihu.com/p/22733283 https://www.jianshu.com/p/b6d76160889d http://kangax.github.io/compat-table/es5/ https://www.w3ctech.com/topic/2054
