To install node.js on OSX 10.11 El Capitan (or OSX 10.10 and OSX 10.9) you can download a pre-compiled binary package which makes a nice and easy installation. Head over to http://nodejs.org/ and click the install button to download the latest package.
Install the package from the .dmg by following along the install wizard which will install both node and npm, npm is Node Package Manager which facilitates installs of additional packages for node.js.
At the end of the install you are prompted to make sure that /usr/local/bin is in your path, double check you have it by running in the Terminal:
node > console.log('hello node'); hello node undefined >
To exit the node.js session just hit ‘control’ + ‘c’ twice.
If you have an earlier version of node you can just download the latest version and install to upgrade it and it will over write the previous version.
To check your version of node run …
Installing Packages for Node
There are many packages for Node such as the popular grunt.js, you use the command npm to see a complete list run:
This will return an exhaustive list of available packages, to install a package run npm install
npm install easyimage
To list installed packages from a project directory run
To upgrade npm packages
To upgrade node.js itself on OSX just download and install the latest from node.org