puremango.co.uk

Enhanced spiral, highly customizable (see full
source for details). Has approx. 5 chars left for you to use for
customizing the values :) The values of 1 and the red color yield to a
rose. Other values may yield other shapes.

Enter your message at the prompt, an alert-Box shows the message
combined with it’s morse code representation.

Only ASCII letters a..z/A..Z and german umlauts äöü/ÄÖÜ are supported,
other characters ignored (resulting in an additional space in the
output).

Update of #533: shorter algorithm, so room left to support upper case,
prevent “undefined” prompt message, include umlauts.

http://alteredqualia.com/
Hypnotunnel in a tweet.

Playing with transparency, modulo and blowing over max lightness.

For slightly different speed and direction change 84 to 63, 67, 96.

Warning: there is some serious flickering, don’t watch this demo if you are prone to seizures.

www.p01.org
tweet-sized entry: Embossed Mandelbrot Fractal rendered onto an HTML5 Canvas element

puremango.co.uk
cave updated again to fix reported firefox hang with setInterval(foo(),1);

Also includes the globalAlpha fix as chrome won’t allow <0.01 and Opera won’t allow <0.1 :(

Handles lower case letters a..z only. Any other character will be replaced by a space.

For decryption enter the key as a negative number.

Based on Eleasar’s morse encoder (http://js1k.com/demos#id533)

move the mouse slowly over the canvas to see the effect If you fold over
the 45° diagonal, you can reduce the source to only 129 bytes:

document.body.children[0].onmousemove=function(e){(C=this.getContext(’2d’))[r='fillRect'](x=e.pageX,y=e.pageY,2,2);C[r](y,x,2,2)}

puremango.co.uk
Another tweetable entry! This one really is stained glass :)

puremango.co.uk
Rot13 in a tweet – now shorter, and with more functionality!

puremango.co.uk
Tweet-sized blocks of colour. Colour choosing technique lifted from http://js1k.com/demo/230 ;)

140 bytes including #js1k hashtag! woop woop!

my.opera.com/splondike
Generates interesting JS1K logos (in a tweet!).
Updated with a more interesting shape, and decoupled the position from
the shape (I could spare the bytes).

Other interesting variations can be generated by changing the rotate
parameter, or the number of rotations. The following rotate arguments
make nice shapes: 33,34.2,37,37,45,49,54,55,57,59,66 or 67.

Enter your message at the prompt, an alert-Box shows the message
combined with it’s morse code representation.

Only characters a..z (lowercase ASCII letters) are allowed, other
characters ignored (resulting in an additional space in the output).

www.nicolarizzo.com
My old broken TV, grayscale again, in a tweet :)

new: Lower the speed max by 1/2, chrome url compatible (cut an paste
source to address bar of Chrome), wont overflow anymore (at cost of
being 64% screen width), 1 char less!

It’s raining cash

shiing.com
twitter-friendly sunburst

*ff-friendly version (fixed-size width & height)

lowbroweye.com
Tweetable (130 bytes) approximate calculation of
Pi with random numbers.

Essentially, darts are thrown randomly at a 1 unit size square . The
proportion of them which within an inscribed 1 unit radius circle
(distance calculated with Pythagora’s theorem) versus the total thrown
converges on pi given a long enough run-time.

This implementation only uses a single quadrant of the square/circle to
save bytes.

A simple ever-changing, multi-coloured fence disappearing into the distance. Fits in a tweet, complete with #JS1K hashtag!

www.tapper-ware.net
Update: Adds Opera compatibility by replacing
location.search parsing with parent.variable for counting. See previous
entry for description.

united-coders.com
In a tweet: Randomly colorizes the elements of a
page. Unfortunately, the demo page only has three visible elements.
Ver.2, down to 120b)

hazelmckendrick.com
The script renders a 2d image of a road running through a desert. It’s dumb, but it does fit in a tweet…

malyshev.info
True binary clock. Shows number of milliseconds since Jan 01 1970. Fits in a tweet.

www.tapper-ware.net
A little romantic waterfall in a nostalgic color
palette. In other words: Random ASCII blocks scrolling down. Not exactly
140 bytes in utf-8, but still 140 characters (Twitter accepts it).

www.tapper-ware.net
A strangely growing mountain in Twitter-friendly 140 characters.

chneukirchen.org
Munching squares in twitterable size

A classic display hack (http://en.wikipedia.org/wiki/Munching_square), in under 140 chars.

trotspot.appspot.com
Computes pi in a non-optimal fashion.

mir.aculo.us
A tweet-length JavaScript quine (a program that outputs it source). As I’m a juror, this is for the showcase. :)

mathiasbynens.be
Let’s just say I called it “ἐπιληψία”.

timeascolor.com
Time As Color shows the current time as color by
setting red to the hour, green to the minute, and blue to the second. I
originally created it in 2000 and it was shown at Gasworks London,
Boston University, and the Bergen Kunsthalle. Last year I recreated it
as an iPhone app. For this version I decided to take up the challenge of
making it work in a tweet and got it to work at exactly 140 characters.

github.com/amrishk
Tweetable test for a web page’s accessibility. It
finds all the images with a missing ‘alt’ attribute and highlights each
one of them with a thick red border.