Javascript - Array question!!!

Question

This code is in the book Head Frist.
var scores = [60, 50, 60, 58, 54, 54,
58, 50, 52, 54, 48, 69,
34, 55, 51, 52, 44, 51,
69, 64, 66, 55, 52, 61,
46, 31, 57, 52, 100, 18,
41, 53, 55, 61, 51, 44];
var lowScore = 0;
var output;
for (var i = 0; i < scores.length; i++) {
output = "Bubble solution #" + i + " score: " + scores[i];
console.log(output);
if (scores[i] > highScore) {
highScore = scores[i];
}
}
console.log("Bubbles tests: " + scores.length);
console.log("Highest bubble score: " + highScore);

The out output for: console.log("Highest bubble score: " + highScore); is 69 and i dont know how could Javascript do it?
// this section i don't know how
if (scores[i] > highScore) {
highScore = scores[i];
}

Can you explain it for me, how could it could 69 as highest value, thank you.

Answer 1

If you look, after the 60 (first value), all values are less than it. The number greather than 60 (in order of scores) is 69, so you can think: My highscore has been actualized one time. (Or maybe, since the first value my highscore was never 60)
This is my hint for you :)

Answer 2

Thank you for you answer, this is what i am looking for. I will think more about it.
Wish you a Merry Christmas ^^