how to switch node version using nvm code example

Example 1: install nvm

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

Example 2: nvm switch version of node

// switch version of node
nvm use 6.9.1

Example 3: install node in nvm

// Ex:
nvm install v12.13.1

Example 4: several node versions

several node versions

Example 5: how to change node version

nvm use --delete-prefix $NODE_VERSION

example:
nvm use --delete-prefix v8.9.4