Can't understand a question from challenge.

Question

Hi. Can anyone explain me why is output 333?

for(var i = 0; i < 3; i++) {
setTimeout (function() {
document.write(i)
}
, 200);
}

Thanks.

Answer 1

that call 3 time setTimeout(...) .
but delay time is 200ms, for is ended and i have 3 value.
therefore 3 time printed 3 and result is 333.

Answer 2

but why for ends when there's something to do, I mean why don't loop waits until setTimeout's end?