how to install node js and npm in ubuntu 18.04 code example

Example 1: install node and npm ubuntu

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

Example 2: install nodejs from ubuntu 18.04

sudo bash nodesource_setup.sh

Example 3: install node package manager ubuntu 18.04

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.35.3/install.sh | bash

Example 4: ubuntu 18.04 nodejs insatll

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