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<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JS Alphabet Pattern 15 - Try It</title>
</head>
<body>
  <h1>Symmetric Alphabet, Star Center</h1>
  <p>Edit the top letter or loops, then click Run.</p>
  <pre id="output"></pre>
  <script>
    const base = "A".charCodeAt(0);
    const top = "E".charCodeAt(0);
    let result = "";

    for (let i = top; i >= base; i--) {
      let line = "";
      for (let j = base; j <= i; j++) {
        line += String.fromCharCode(j);
      }
      const stars = 2 * (top - i);
      for (let s = 0; s < stars; s++) {
        line += "*";
      }
      for (let m = i; m >= base; m--) {
        line += String.fromCharCode(m);
      }
      result += line + "\n";
    }

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

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JavaScript Alphabet Pattern 15 (Try It)