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  <meta charset="utf-8">
  <title>JS Alphabet Pattern 28 - Try It</title>
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  <h1>Square mirror (E..A..E)</h1>
  <p>Edit <code>top</code> or the <code>j &gt; i</code> condition, then click Run.</p>

  <pre id="output"></pre>

  <script>
    (() => {
      const A = "A".charCodeAt(0);
      const top = "E".charCodeAt(0);

      let result = "";
      for (let i = top; i >= A; i--) {
        let line = "";
        for (let j = top; j >= A; j--) {
          line += (j > i ? String.fromCharCode(j) : String.fromCharCode(i)) + " ";
        }
        for (let j = A + 1; j <= top; j++) {
          line += (j > i ? String.fromCharCode(j) : String.fromCharCode(i)) + " ";
        }
        result += line.trimEnd() + "\n";
      }

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

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JavaScript Alphabet Pattern 28 (Try It)