HTML Code

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JS Alphabet Pattern 16 - Try It (Explicit)</title>
</head>
<body>
  <h1>Centered Alphabet Pyramid (Explicit Pad)</h1>
  <p>Edit rows or pad/letter loops, then click Run.</p>
  <pre id="output" style="font-family: monospace; white-space: pre;"></pre>
  <script>
    const rows = 3;
    const width = 2 * rows - 1;
    let code = "A".charCodeAt(0);
    let result = "";

    for (let row = 1; row <= rows; row++) {
      const letters = 2 * row - 1;
      const pad = width - letters;
      let line = "";

      for (let s = 0; s < pad; s++) {
        line += " ";
      }

      for (let L = 0; L < letters; L++) {
        line += String.fromCharCode(code);
        if (L < letters - 1) line += " ";
        code++;
      }

      result += line + "\n";
    }

    document.getElementById("output").textContent = result;
  </script>
</body>
</html>

Lines: 0 | Characters: 0

Live Preview Auto-refresh on Run

JavaScript Alphabet Pattern 16 (Try It - Explicit Pad)