Code samples

03 Apr 2026

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HTML

<!DOCTYPE html>
<html lang="en">
<head><title>Boop</title></head>
<body>
  <button id="boop" aria-label="Boop the snoot">Boop</button>
  <output id="count">0</output>
</body>
</html>

JavaScript

const btn = document.getElementById("boop");
const out = document.getElementById("count");
let boops = 0;

btn.addEventListener("click", () => {
  boops += 1;
  out.textContent = boops;
  if (boops === 100) alert("You booped 100 times!");
});

Dart

void main() {
  final stream = Stream.periodic(
    Duration(seconds: 1),
    (i) => 'boop #${i + 1}',
  ).take(10);

  stream.listen(
    print,
    onDone: () => print('All booped out.'),
  );
}