how install node js 12 in ubuntu code example

Example 1: how to install node js in ubuntu

//Author: Mohammad Arman Khan
//How To Install Node.js on Ubuntu
1: sudo apt-get update
2: sudo apt-get install nodejs
3: sudo apt-get install npm
4: nodejs -v

Example 2: ubuntu install latest node and npm

# Using Ubuntu
curl -fsSL https://deb.nodesource.com/setup_16.x | sudo -E bash -
sudo apt-get install -y nodejs

# Using Debian, as root
curl -fsSL https://deb.nodesource.com/setup_16.x | bash -
apt-get install -y nodejs