jsFiddle is the perfect solution; it provides a custom environment (based on user selections) to test (or fiddle with) your JavaScript, HTML, and CSS code ... to create scrap projects or files.

The jury is still out if a Turing machine is possible, but he did manage to generate some simple fractals using just CSS and HTML, no JavaScript ... greatly limiting the cool factor.

It's called Dash, and it lets users learn how to use HTML, Javascript, and CSS by working through four projects of increasing difficulty. As you progress through the projects — starting by ...