sudo apt-get update && sudo apt-get -y upgrade

If to install Node.js Version – 4.x

curl -sL https://deb.nodesource.com/setup_4.x | sudo -E bash -
sudo apt-get install -y nodejs

If to install Node.js Version – 7.x

curl -sL https://deb.nodesource.com/setup_7.x | sudo -E bash -
sudo apt-get install -y nodejs

也可以是8,9,10,等等…

 

如果删除已有版本

sudo apt-get purge --auto-remove nodejs

 

刷新npm

好多POST说，运行以下的指令：

sudo npm cache clean -f
sudo npm install -g n
sudo n stable

 

参考资料：

https://www.rosehosting.com/blog/install-npm-on-ubuntu-16-04/
https://askubuntu.com/questions/786015/how-to-remove-nodejs-from-ubuntu-16-04/
https://stackoverflow.com/questions/8191459/how-do-i-update-node-js/