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JavaScript Number Pattern 22
JavaScript Number Pattern 22 (Try It)
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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>JS Number Pattern 22 - Try It</title> </head> <body> <h1>Odd Length Number Triangle</h1> <p>Edit <code>rows</code> and click Run.</p> <pre id="output"></pre> <script> const rows = 5; let result = ""; // Outer loop uses odd lengths: 1, 3, 5, 7, 9... for (let i = 1; i <= 2 * rows - 1; i += 2) { let line = ""; // Concatenate digits without spaces. for (let j = 1; j <= i; j++) { line += j; } result += line + "\n"; } document.getElementById("output").textContent = result; </script> </body> </html>
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