npm install 权限的问题

用ctrl+r切换到对象的目录,以管理圆的身份执行

1. npm cache clean first.

2. If that doesn’t fix things, take a look in %APPDATA% pm-cache, or if you’re using PowerShell, $env:APPDATA pm-cache.

After cleaning the cache, you may still be left with remnants. Manually remove everything in that directory, and try again. This has always fixed things for me.

As @Crazzymatt was mentioning, as of MPM 5 version, we need to use npm cache verify instead of npm cache clean. Or else you will get an error as preceding.

https://stackoverflow.com/questions/22325031/npm-please-try-using-this-command-again-as-root-administrator