Javascript

console.log('hello, world')

HTML

hello, world

CSS

hello { content: "world" }

Python

print("hello, world")

Bash

echo "hello world"

Rust

fn main() { println!("Hello, world!"); }

Tests

return ( document.querySelector('code-editor').constructor !== HTMLElement ) const code = document.querySelector('#basic'); console.log(code.source); return code.source.trim() === 'console.log(\'hello, world\')'