After all of the notes have been played for the song, the updateNotes() method calls showScore(), where we will show the player's score and some statistics:

function showScore()
{
    $notesPanel.hide();
    $resultsPanel.fadeIn();
    $(".score", $resultsPanel).text(score);
    $(".correct", $resultsPanel).text(notesCorrect);
    $(".count", $resultsPanel).text(noteCount);
    $(".note-accuracy", $resultsPanel).text(
        Math.round(100 * notesCorrect / noteCount));
    $(".timing-accuracy", $resultsPanel).text(
        Math.round(10 * score / notesCorrect));
}

First we hide the notes panel and fade in the score panel in its place. Then, we fill in the score and statistics into the placeholders in the DOM. We show the score, number of notes correct, and total number of notes. In addition, we compute the percentage of notes they got correct using the notesCorrect and noteCount variables.

We get the timing accuracy percentage by factoring it from the score and number of notes correct. Remember that there are a total of 10 points possible per note, so if they got 17 notes correct the total number of possible points is 170. If the score was 154 that would be 154 / 170 ≈ 91%.