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JS1k: The JavaScript code golfing competition

2013 - Spring!

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Together the hand picked jury will pick the top 10. They are a mix of JavaScripters and demo sceners.

Juriy Zaytsev

Creator of Fabric.js, blogs on perfectionkills.com, JS/ES junkie, ex-Prototype developer.

@kangax perfectionkills.com

Paul Irish

A Developer Advocate for Chrome. He's thinking a lot about how to make you more productive with tools that improve your workflow help you make slicker, sexier, mobile web apps. He works on tools like Modernizr, HTML5 Please, CSS3 Please, Yeoman, and other bits and bobs of open source code.

@paul_irish paulirish.com

Klas Kroon

Grumpy Bastard 'creative' developer at North Kingdom.

@oosmoxiecode oos.moxiecode.com

Sjoerd Visscher

Demo scener with Jello in the previous century, JavaScripter at Q42 in this one.

@sjoerd_visscher sjoerdvisscher.handcraft.com


A competition has to have prizes. Below you see an overview of the prizes and who offered them.

300 EUR

Anonymous — For the best demo


150 EUR

Uxebu — Known far and wide for their crazy work. Currently they're working on pixelplant, a flash to html5 translation service. And BonsaiJS, an svg graphics library. The prize will be given in cash.


3x 42 eur + Handcraft account

Q42 — A bunch of nerds from the Netherlands. Nerds like jury member Sjoerd Visscher. They do projects (like Rijksmuseum.nl and Meethue.com) and create products (like Handcraft) and games (like Quento). They are giving away €42 and a paid Handcraft subscription for a year to each of the three winning JS1k nerds.


65 USD

JS1k — Left over from last years competition. A 65$ voucher to use on ThinkGeek


50 USD

FetchNotes — Makes productivity as simple as a tweet. They help people keep track of the things they need and want to do, and they help them get it done too. The prize will be given in cash.


50 USD

Matt Pass — Creator of ICEcoder, has put $50 into the prize fund


50 USD

Echo JS — A social news site entirely focused on JavaScript development and front-end news


50 USD

Andrzej Mazur — A coder from Enclave Games, who organizes js13kGames, and Gamedev


50 USD

Storenvy — Building a 10 person team of hackers, engineers and designers to re-invent e-commerce


50 EUR

Björn Söderqvist — co-founder of CopenhagenJS and Malmö Open Device Lab, donates €50 to the prize fund


50 EUR

Levelap — An agile software development team in Quito, Ecuador


Effective JavaScript

Jared Wyles — offers one copy of Dave Herman&pos;s book; Effective JavaScript, to the winner


2.5 BTC

Kevin Stricker — "just a humble developer" offers 2.5 BitCoin (~ 50US$ at the time of compo) to the winner



Below are the final top10 demos for this compo. Check the overview page to see them all!

#1: Strange crystals II

By Philippe Deschaseaux
( @ehouais, website )

The crystals have disappeared in the space/time fracture, but shiny Furbee has survived and is now accompanying the visitors.

#2: Furbee, get out of that tunnel ASAP!

By Roman Cortes
( @romancortes, website )

This is a tribute to amazing Strange Crystals by @ehouais (http://js1k.com/2013-spring/demo/1459). As my original Furbee entry (http://js1k.com/2013-spring/demo/1451) and ehouais' entry went viral/Sla…

#3: 3013 The 䕵 space-time fracture

By Mathieu 'p01' Henri
( @p01, website )

The miners were right! Damn Furbee came close to the strange crystals and opened a space-time fracture 1K springs into the future, trapping a 䕵 Mech inside a time bubble.

#4: Synth Sphere

By Noah Weninger
( @gleurop )

An experimental music synthesizer with real time FFT. To play a custom song, add a hash (#) character to the url and put the algorithm afterwards. All songs you play are saved to local storage and pre…

#5: Pointillism

By Benjamin Bill Planche
( @b_aldream, website )

Pointillist representation of an animated landscape: watch Spring comes and passes, and moving shadows casted by clouds.

#6: 3D City Tour

By Jani Ylikangas
( website )

1st person view of a springtime island city. Use your mouse to fly over the city, jump from roof to roof or drive with the cars on the streets. You can also just let the autopilot show you around.

#7: Comanche

By Siorki
( @Siorki, website )

Helicopter simulation, tribute to the game Comanche : Maximum Overkill.

#8: Color Factors

By Pablo Caro
( @pcaro90, website )

Welcome to Color Factors!

#9: Winter Wrap Up

By Arne
( @veubeke, website )

Before spring can start winter has to be cleaned up. It's your job to move the remaining snow piles to spots of grass that have died during winter.

#10: Psychedelic animation

By Piotr Stosur

Animated fractal shapes(mainly rotating spirals) similar to CEVs after taking psychedelic/dissociative drugs. :P Based on copying previous frame into 4 smaller fragments(once per frame, no other kind …