scope.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <script>
      var name = "Aisha";
      let fName = "Yaseen";
      const className = "CNC";
      function isTrue() {
        if (className) {
          alert(className);
        }
      }
      isTrue();
    </script>
  </head>
  <body></body>
</html>