> How to make a simple 2d game in JavaScript?

How to make a simple 2d game in JavaScript?

Posted at: 2014-12-18 
Mario game step by step -> http://processingjs.nihongoresources.com...

I am extremely new to programming and only know some HTML, CSS & JavaScript learnt from courses on Codecademy. I'd like to start learning how to make simple, 2d games to then move on to more complicated stuff. What else do I need to know to start making my own games? (any good beginner-level tutorials?)