how to change node version

nvm install v10.15 //v10.15 is a version i want.

$ nvm ls

nvm use {Node version}

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

Usage:
nvm install <version>       Download and install a <version>
nvm use <version>           Modify PATH to use <version>
nvm ls                      List versions (installed versions are blue)

nvm use --delete-prefix $NODE_VERSION

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

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