Darin is a mostly autodidactic programmer, having learned Ruby, Rails, JavaScript, and React through a lot of trial and error, unit testing, and a lot of Googling. Darin has now fallen in love with React and currently creating an application that is very React heavy and with more testing than he's ever seen in a Javascript app.
Darin's article
Watch: A Lesson on React Props, Defaults and Modules
Gain confidence with default properties, such as properties, defaults, and modules and allow your components to be used without any properties being passed.