If you have the need for using or testing multiple different versions of Node.js, theres a small tool that can help you a lot.
It's an npm package called n.
You install it via npm:
npm install -g n
And then you can easily install a certain version of Node.js like this:
n 5.12.0 - to install node.js version 5.12.0
You can also type
n and press enter, to list all installed Node.js versions, and select which you want to use:
Use the up and down arrows, and enter, to select which version to use.
Installing the latest version
To install the latest version of node, just type:
Removing a Node.js version
To remove a Node.js version, just type:
n rm 5.12.0