install nvm on node code example

Example 1: use nvm to install latest node

//lists all versions
nvm ls-remote

//installs the version you want (in this case version 14.0.0)
nvm install v14.0.0

//use the version that you installed as the default
nvm use v14.0.0

Example 2: install nvm

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

Example 3: install node in nvm

// Ex:
nvm install v12.13.1

Example 4: install nvm

curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.34.0/install.sh | bash