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Node.js is an open-source cross-platform JavaScript run-time environment that allows server-side execution of JavaScript code.

Npm is the package manager for Node.js. In this tutorial, I will show you how to install a different version of node js on ubuntu.

#Essential Tools

sudo apt-get install build-essential apt-transport-https curl

#Installing Node.js and npm from Node Source

You can install any node js version by the setup_xx.x.

The command will add the Node Source signing key to your system, create an apt sources repository file, install all necessary packages and refresh the apt cache.

curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash 

curl -sL https://deb.nodesource.com/setup_11.x | sudo -E bash 

curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash 

After that, you need to hit the following command.

sudo apt install nodejs

Finally, you can check the node js and npm version by hitting the following commands.

node -v
npm -v