（一）直接使用npm命令切换
1.设置使用淘宝镜像
npm config set registry + 需要切换的仓库地址
npm config set registry https://registry.npm.taobao.org
2.查看当前资源，看是否切换成功，成功后可直接使用cnpm命令
npm config get registry
3.还原到npm仓库
npm config set registry https://registry.npmjs.org
（二）使用nrm快捷切换npm默认仓库
1.安装nrm
# 安装nrm npm i -g nrm # 列出所有npm源 nrm ls
D:\前端学习资料\PracticeDemo>nrm ls npm -------- https://registry.npmjs.org/ yarn ------- https://registry.yarnpkg.com/ cnpm ------- http://r.cnpmjs.org/ * taobao ----- https://registry.npm.taobao.org/ nj --------- https://registry.nodejitsu.com/ npmMirror -- https://skimdb.npmjs.com/registry/ edunpm ----- http://registry.enpmjs.org/
前面有*的代表当前使用的仓库。
2.切到npm，使用nrm use npm
D:\前端学习资料\PracticeDemo>nrm use npm
Registry has been set to: https://registry.npmjs.org/
3.测试所有仓库响应的时间
D:\前端学习资料\PracticeDemo>nrm test * npm ---- 1130ms yarn --- 2339ms cnpm --- 1986ms taobao - 704ms nj ----- Fetch Error npmMirror 9314ms edunpm - Fetch Error