When comparing Mozilla Developer Network vs edX, the Slant community recommends Mozilla Developer Network for most people. In the question“What are the best resources to learn JavaScript?” Mozilla Developer Network is ranked 14th while edX is ranked 15th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Free & open source
Pro Step by step learning on the ins and outs of JavaScript
Pro Close to first-hand information
The best information sources are the W3C, JavaScript, Golang etc. specs, but they are too hard to read. All these videos (Lynda, Udemy, mail.ru, etc.) and articles may and do contain outdated and sometimes incorrect information.
Pro Free
Both edX and the classes are free.
Pro Offers courses from well known schools
edX offers courses from a wide range of well known colleges and universities including Harvard, MIT, UC Berkeley, Cornell and more.
Pro Large selection of science courses
edX offers a wide variety of science-related courses. This makes it a great resource for learning not only specific programming languages, but also other topics relating to computer science.
Pro A lot of topics (subjects)
Topics include biology, business, chemistry, computer science, economics, finance, electronics, engineering, food and nutrition, history, humanities, law, literature, math, medicine, music, philosophy, physics, science, statistics and more.
Pro Offer certificates for some courses
Cons
Con No exercises to work with
Con Lack of engagement in the forums
edX does not have the same forum participation from both students and instructors that other websites do, and the form of engagement often does not encourage discussion.
Con Courses aren't always available
While edX does offer some self-paced courses, you may end up waiting for the course of your choice to be run.
Con The forums are difficult to navigate
The forums are difficult to sort by date and topic, and are unintuitive to navigate.