Untitled

<!DOCTYPE html>
<html lang="en">

  <head>
    <title>Note & Pitch</title>
  </head>

  <body>
    <script>
      var note = prompt("Find Pitch Class for note: ", "");

      switch (note) {
        case "C":
          document.write("Pitch of " + note + " is 0.");
          break;

        case "B#":
          document.write("Pitch of " + note + " is 0.");
          break;

        case "C#":
          document.write("Pitch of " + note + " is 1.");
          break;

        case "Db":
          document.write("Pitch of " + note + " is 1.");
          break;

        case "D":
          document.write("Pitch of " + note + " is 2.");
          break;

        case "D#":
          document.write("Pitch of " + note + " is 3.");
          break;
        case "Eb":
          document.write("Pitch of " + note + " is 3.");
          break;
        case "E":
          document.write("Pitch of " + note + " is 4.");
          break;
        case "E#":
          document.write("Pitch of " + note + " is 5.");
          break;
        case "Fb":
          document.write("Pitch of " + note + " is 4.");
          break;
        case "F":
          document.write("Pitch of " + note + " is 5.");
          break;
        case "F#":
          document.write("Pitch of " + note + " is 6.");
          break;
        case "Gb":
          document.write("Pitch of " + note + " is 6.");
          break;
        case "G":
          document.write("Pitch of " + note + " is 7.");
          break;
        case "G#":
          document.write("Pitch of " + note + " is 8.");
          break;
        case "Ab":
          document.write("Pitch of " + note + " is 8.");
          break;
        case "A":
          document.write("Pitch of " + note + " is 9.");
          break;
        case "A#":
          document.write("Pitch of " + note + " is 10.");
          break;
        case "Bb":
          document.write("Pitch of " + note + " is 10.");
          break;
        case "B":
          document.write("Pitch of " + note + " is 11.");
          break;
        default:
          document.write("Please enter a valid note.");
          break;
      }

      document.write("<br />Just completed finding pitch class of a musical note!");
    </script>

  </body>

</html>