Run npm install Behind Proxy
npm supports to run behind a proxy. Of course, we can set the proxy using command npm config set proxy or npm config set https-proxy which you can refer to https://stackoverflow.com/questions/7559648/is-there-a-way-to-make-npm-install-the-command-to-work-behind-proxy.
However, we may only want to use a proxy temporarily without change any configuration, thus, we can set proxy through the command line directly,