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Dev tools · January 18, 2021

PC

Print chr$(205.5+rnd(1)) goto 10

JavaScript implementation of the famous `10 print chr$(205.5+rnd(1)) goto 10` one line of BASIC code. data:text/html,a=()=>{document.write(Math.random(){a();window.requestAnimationFrame(update)};update() Copy and paste the above "link" in your browser.

Print chr$(205.5+rnd(1)) goto 10 launched on January 18, 2021 with 42 votes, #895 of 3,157 launches that month and more than 75% of that year's launches.

Alternatives

In plain words

This is a JavaScript recreation of a classic one-line BASIC program that generates maze-like patterns by randomly alternating between two diagonal characters. Users paste a data URL directly into their browser to run the visualization, which continuously fills the screen with slashes and backslashes in a monospace font. It's designed for developers interested in generative art, retro computing, or algorithmic pattern creation.

written from the facts on this page · September 2026

From the sources

In the maker’s words, at launch

JavaScript implementation of the famous `10 print chr$(205.5+rnd(1)) goto 10` one line of BASIC code. data:text&#x2F;html,<script>a=()=>{document.write(Math.random()<0.5?'\u2571':'\u2572');document.body.style.cssText="margin:0;padding:0;font-family:monospace;word-break:break-word;font-size:3em;letter-spacing:0;font-st…

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Source: Show HN post ↗ · launch text quoted in part

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