How JQuery knows that variable is from the loop?

[gintare]

Bellow is the example from:
http://james.padolsey. com/javascript/closures-in-javascript/

for (var i = 0; i < 100; ++i) {
    myElements[i].onclick = ( function(n) {
        return function() {
            alert( 'You clicked on: ' + n );
        };
    })(i);
}

How function (self invoking anonymous function) knows that n=1?

[Dormilich]

How function (self invoking anonymous function) knows that n=1?

because 1 was passed to it.