npm设置代理
npm config set proxy=http://127.0.0.1:8087
npm config set registry=http://registry.npmjs.org
代理用户名和密码
npm config set proxy http://username:password@server:port
npm confit set https-proxy http://username:password@server:port
取消代理
npm config delete proxy
npm config delete https-proxy
设置淘宝代理
npm install -g cnpm --registry=https://registry.npm.taobao.org
显示当前的镜像网址
npm get registry
执行结果应该是：registry.npmjs.org/
