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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>Composite — range 1–10</title>
</head>
<body>
  <h1>Composites from 1 to 10</h1>
  <p>Edit the loop bounds to experiment, then click <strong>Run</strong>.</p>
  <pre id="out"></pre>
  <script>
    (function () {
      function isComposite(number) {
        if (number <= 1) {
          return false;
        }
        for (var i = 2; i * i <= number; i++) {
          if (number % i === 0) {
            return true;
          }
        }
        return false;
      }
      var line = "";
      for (var num = 1; num <= 10; num++) {
        if (isComposite(num)) {
          line += num + " ";
        }
      }
      document.getElementById("out").textContent =
        "Composite numbers in the range 1 to 10 are:\n" + line.trim();
    })();
  </script>
</body>
</html>

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JavaScript Composite Number — range 1 to 10 (Try It)