Break and continue

Question

Hey guys im not sure to understand this one.. you can help?

What is the output of this code?
var sum=0;
for(i=4; i<8; i++) {
if (i == 6) {
continue;
}
sum += i;
}
document.write(sum);

1

Answer 1

At the beginning:
sum = 0
i = 4

First iteration:
sum += i --> sum = 0 + 4 --> sum = 4
i++ --> i = 4 + 1 --> i = 5

Second iteration:
sum += i --> sum = 4 + 5 --> sum = 9
i++ --> i = 5 + 1 --> i = 6

Third iteration:
i == 6 is true, so continue is triggered, skipping the rest of the interation, so i is not added to the sum
i++ --> i = 6 + 1 --> i = 7

Fourth iteration:
sum += i --> sum = 9 + 7 --> sum = 16
i++ --> i = 7 + 1 --> i = 8

Loop ends:
i<8 is false, so the loop ends
sum = 16