Contrast calculator for pairs of colors.
JS copies of some old Z80 code
Spits out Fibonacci numbers, shows guessing the index of any value
Reading pixels from a web cam feed. This won't work directly is jsfiddle.net, but will from a local file.
Limited range sketch from Wikipedia
conversion from processing
No-Library (pure JS), HTML, CSS, JavaScript
https://www.dwitter.net/d/20584
A quick demo of HTML and styling to break up a menu into a hierarchy
Old and new school ways to read query strings
Short & dirty character encoding
Splitting strings to chars
Playing with layered gradients
Just an idea
Change Gherkin syntax to C# code (with some silly Unicode tricks)
A simple-as-possible set of page layout rules that allows for a wide range of automatic layout
Get the modulo of a pair, without using division or multiplication
Line projection demo
an easy typing practise game for younger kids
A really stoopid way of drawing diagrams on a web page.