JavaScript tutorial site attracts 20,000 users

Codecademy, an interactive tutorial on the basics of JavaScript, has attracted 200,00 unique users in just three days.

The web based guide teaches the programming technique as far as "While" loops, and allows users to complete a number of lessons without even registering an account.

The company was co-founded by Zach Sims and Ryan Bubinski, who started work on the project at Columbia University.

According toTechCrunch, the pair posted the site's details on Hacker News, and within just a few hours had attracted 1,000 concurrent users.

Sims and Bubinski are still finalising their plans for monetising the site.