I'm currently writing a series of articles on the CodeProject called 'Learn JavaScript' and am pleased to say that the latest article is available now!

Learn JavaScript Part 2 - Space Invaders

In this article we take a look at how to create the classic space invaders game with plain JavaScript and HTML - no libraries or frameworks. You can see it in action on the page experiments/spaceinvaders. Check it out - as always, comments are welcome!