HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>find stylesheet by title</title>
  <style title="Main">body { padding: 1rem; }</style>
</head>
<body>
  <pre id="out"></pre>
  <script>
    function getStyleSheet(uniqueTitle) {
      for (var i = 0; i < document.styleSheets.length; i++) {
        var sheet = document.styleSheets[i];
        if (sheet.title === uniqueTitle) return sheet;
      }
    }
    var sheet = getStyleSheet("Main");
    document.getElementById("out").textContent =
      sheet ? "Found Main (title: " + sheet.title + ")" : "Not found";
  </script>
</body>
</html>

Lines: 0 | Characters: 0

Live Preview Auto-refresh on Run

styleSheets — find by title (Try It)