有的nodejs版本不支持win7，在win7系统中执行npm -v时会有以下提示
This application is only supported on Windows 8.1, Windows Server 2012 R2, or hi
gher.
下载v12.16.2及之前的版本即可
https://nodejs.org/dist/
This application is only supported on Windows 8.1, Windows Server 2012 R2, or hi gher.
原文：https://www.cnblogs.com/whqbk/p/14912804.html