1.下载安装包

wget https://nodejs.org/dist/v14.15.4/node-v14.15.4-linux-x64.tar.xz

2.解压并放入制定目录

tar -xf node-v14.15.4-linux-x64.tar.xz
mv node-v14.15.4-linux-x64 /usr/local/node

3.建立软链接

cd /usr/bin
ln -s /usr/local/node/bin/node node
ln -s /usr/local/node/bin/npm npm

4,配置淘宝镜像

npm config set registry https://registry.npm.taobao.org

5.查看是否切换成功

npm config get registry

如果npm不好使,使用cnpm

npm install -g cnpm --registry=https://registry.npm.taobao.org
cd /usr/bin
ln -s /usr/local/node/bin/cnpm cnpm