Something that will be to JavaScript what training wheels are for bikes. The relationship between Scratch and BlockLike.js is close enough that you could say there is a direct mapping of abstractions.

This 21-hour course gives you a complete crash course in building a website or app with JavaScript, from the front-end to the back-end. Through three complete projects, you'll gain a hands-on ...

If you want to learn to create relatively simple online games using Javascript, then the HTML5 Game From Scratch Step By Step Learning JavaScript course is a great place to start.